diff --git a/workspace.dsl b/workspace.dsl
index b8d3474..0b661dd 100644
--- a/workspace.dsl
+++ b/workspace.dsl
@@ -28,6 +28,7 @@ workspace "Digital Screening" "All 6 pathway, currently" {
     mesh = nhs_shared_component "MESH"
     notify = nhs_shared_component "Notify"
     ods = nhs_shared_component "Organisation Data Service (ODS)"
+    nhs_login = nhs_shared_component "NHS login"
     nhsnet = nhs_shared_component "NHS.Net Exchange"
     dps = nhs_shared_component "Data Provisioning Service (DPS)"
 
@@ -129,6 +130,14 @@ workspace "Digital Screening" "All 6 pathway, currently" {
     gp2drs -> hic
     hic -> quicksilva
     quicksilva -> des_screening_service
+
+    // Lung Screening Pathway
+    lcs = digital_screening_system "Lung Cancer Screening (LCS)"
+    spectra = external_system "InHealth (Spectra)"
+
+    spectra -> lcs "Initial cohort aged 55-74 invited via letter / SMS"
+    spectra -> lcs "Response sharing for clinical comparison"
+    nhs_login -> lcs "Participant login and data"
   }
 
   configuration {
@@ -164,6 +173,11 @@ workspace "Digital Screening" "All 6 pathway, currently" {
         autolayout lr
     }
 
+    systemContext lcs "Lung_Cancer_Screening" {
+      include lcs nhs_login spectra
+        autolayout lr
+    }
+
       styles {
         element "Digital Screening System" {
           background #009639
diff --git a/workspace.json b/workspace.json
index 5ff633e..20e334b 100644
--- a/workspace.json
+++ b/workspace.json
@@ -15,7 +15,7 @@
       },
       "relationships" : [ {
         "destinationId" : "6",
-        "id" : "87",
+        "id" : "88",
         "sourceId" : "1",
         "tags" : "Relationship"
       } ],
@@ -30,7 +30,7 @@
       },
       "relationships" : [ {
         "destinationId" : "1",
-        "id" : "86",
+        "id" : "87",
         "sourceId" : "2",
         "tags" : "Relationship"
       } ],
@@ -46,18 +46,18 @@
       "relationships" : [ {
         "description" : "provide registrations and demographics",
         "destinationId" : "4",
-        "id" : "23",
+        "id" : "24",
         "sourceId" : "3",
         "tags" : "Relationship"
       }, {
         "destinationId" : "5",
-        "id" : "39",
+        "id" : "40",
         "sourceId" : "3",
         "tags" : "Relationship"
       }, {
         "description" : "cohort",
-        "destinationId" : "47",
-        "id" : "50",
+        "destinationId" : "48",
+        "id" : "51",
         "sourceId" : "3",
         "tags" : "Relationship"
       } ],
@@ -72,20 +72,20 @@
       },
       "relationships" : [ {
         "description" : "perform DQ check, send demographic updates",
-        "destinationId" : "14",
-        "id" : "24",
+        "destinationId" : "15",
+        "id" : "25",
         "sourceId" : "4",
         "tags" : "Relationship"
       }, {
         "description" : "Oracle Queues",
-        "destinationId" : "65",
-        "id" : "71",
+        "destinationId" : "66",
+        "id" : "72",
         "sourceId" : "4",
         "tags" : "Relationship"
       }, {
         "description" : "Cohort of men due to reach 65 the following year",
-        "destinationId" : "81",
-        "id" : "82",
+        "destinationId" : "82",
+        "id" : "83",
         "sourceId" : "4",
         "tags" : "Relationship"
       } ],
@@ -98,8 +98,8 @@
         "structurizr.dsl.identifier" : "caas"
       },
       "relationships" : [ {
-        "destinationId" : "13",
-        "id" : "40",
+        "destinationId" : "14",
+        "id" : "41",
         "sourceId" : "5",
         "tags" : "Relationship"
       } ],
@@ -112,8 +112,8 @@
         "structurizr.dsl.identifier" : "gp2drs"
       },
       "relationships" : [ {
-        "destinationId" : "83",
-        "id" : "88",
+        "destinationId" : "84",
+        "id" : "89",
         "sourceId" : "6",
         "tags" : "Relationship"
       } ],
@@ -126,28 +126,28 @@
         "structurizr.dsl.identifier" : "cis2"
       },
       "relationships" : [ {
-        "destinationId" : "14",
-        "id" : "36",
+        "destinationId" : "15",
+        "id" : "37",
         "sourceId" : "7",
         "tags" : "Relationship"
       }, {
-        "destinationId" : "16",
-        "id" : "37",
+        "destinationId" : "17",
+        "id" : "38",
         "sourceId" : "7",
         "tags" : "Relationship"
       }, {
-        "destinationId" : "13",
-        "id" : "38",
+        "destinationId" : "14",
+        "id" : "39",
         "sourceId" : "7",
         "tags" : "Relationship"
       }, {
-        "destinationId" : "47",
-        "id" : "53",
+        "destinationId" : "48",
+        "id" : "54",
         "sourceId" : "7",
         "tags" : "Relationship"
       }, {
-        "destinationId" : "65",
-        "id" : "78",
+        "destinationId" : "66",
+        "id" : "79",
         "sourceId" : "7",
         "tags" : "Relationship"
       } ],
@@ -161,26 +161,26 @@
       },
       "relationships" : [ {
         "description" : "participant data",
-        "destinationId" : "15",
-        "id" : "29",
+        "destinationId" : "16",
+        "id" : "30",
         "sourceId" : "8",
         "tags" : "Relationship"
       }, {
         "description" : "screening episode outcomes",
-        "destinationId" : "17",
-        "id" : "31",
+        "destinationId" : "18",
+        "id" : "32",
         "sourceId" : "8",
         "tags" : "Relationship"
       }, {
         "description" : "lab results",
-        "destinationId" : "47",
-        "id" : "58",
+        "destinationId" : "48",
+        "id" : "59",
         "sourceId" : "8",
         "tags" : "Relationship"
       }, {
         "description" : "lab results",
         "destinationId" : "2",
-        "id" : "59",
+        "id" : "60",
         "sourceId" : "8",
         "tags" : "Relationship"
       } ],
@@ -202,14 +202,14 @@
       },
       "relationships" : [ {
         "description" : "GP Practice details",
-        "destinationId" : "47",
-        "id" : "60",
+        "destinationId" : "48",
+        "id" : "61",
         "sourceId" : "10",
         "tags" : "Relationship"
       }, {
         "description" : "Organisation details",
-        "destinationId" : "65",
-        "id" : "80",
+        "destinationId" : "66",
+        "id" : "81",
         "sourceId" : "10",
         "tags" : "Relationship"
       } ],
@@ -217,6 +217,21 @@
     }, {
       "documentation" : { },
       "id" : "11",
+      "name" : "NHS login",
+      "properties" : {
+        "structurizr.dsl.identifier" : "nhs_login"
+      },
+      "relationships" : [ {
+        "description" : "Participant login and data",
+        "destinationId" : "92",
+        "id" : "96",
+        "sourceId" : "11",
+        "tags" : "Relationship"
+      } ],
+      "tags" : "Element,Software System,NHS England Shared Component"
+    }, {
+      "documentation" : { },
+      "id" : "12",
       "name" : "NHS.Net Exchange",
       "properties" : {
         "structurizr.dsl.identifier" : "nhsnet"
@@ -224,7 +239,7 @@
       "tags" : "Element,Software System,NHS England Shared Component"
     }, {
       "documentation" : { },
-      "id" : "12",
+      "id" : "13",
       "name" : "Data Provisioning Service (DPS)",
       "properties" : {
         "structurizr.dsl.identifier" : "dps"
@@ -232,48 +247,48 @@
       "tags" : "Element,Software System,NHS England Shared Component"
     }, {
       "documentation" : { },
-      "id" : "13",
+      "id" : "14",
       "name" : "Cohort Manager",
       "properties" : {
         "structurizr.dsl.identifier" : "cohort_manager"
       },
       "relationships" : [ {
-        "destinationId" : "14",
-        "id" : "41",
-        "sourceId" : "13",
+        "destinationId" : "15",
+        "id" : "42",
+        "sourceId" : "14",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,Digital Screening System"
     }, {
       "documentation" : { },
-      "id" : "14",
+      "id" : "15",
       "name" : "BS Select",
       "properties" : {
         "structurizr.dsl.identifier" : "bs_select"
       },
       "relationships" : [ {
         "description" : "participant data",
-        "destinationId" : "17",
-        "id" : "27",
-        "sourceId" : "14",
+        "destinationId" : "18",
+        "id" : "28",
+        "sourceId" : "15",
         "tags" : "Relationship"
       }, {
         "description" : "manual entry of round plan",
-        "destinationId" : "15",
-        "id" : "33",
-        "sourceId" : "14",
+        "destinationId" : "16",
+        "id" : "34",
+        "sourceId" : "15",
         "tags" : "Relationship"
       }, {
         "description" : "data services: KC63",
-        "destinationId" : "16",
-        "id" : "35",
-        "sourceId" : "14",
+        "destinationId" : "17",
+        "id" : "36",
+        "sourceId" : "15",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,Digital Screening System"
     }, {
       "documentation" : { },
-      "id" : "15",
+      "id" : "16",
       "name" : "National Breast Screening Service (NBSS)",
       "properties" : {
         "structurizr.dsl.identifier" : "nbss"
@@ -281,31 +296,31 @@
       "relationships" : [ {
         "description" : "screening episode outcomes",
         "destinationId" : "8",
-        "id" : "30",
-        "sourceId" : "15",
+        "id" : "31",
+        "sourceId" : "16",
         "tags" : "Relationship"
       }, {
         "description" : "send screening results (letter)",
         "destinationId" : "2",
-        "id" : "34",
-        "sourceId" : "15",
+        "id" : "35",
+        "sourceId" : "16",
         "tags" : "Relationship"
       }, {
         "description" : "KC62 as manual CSV upload",
-        "destinationId" : "16",
-        "id" : "42",
-        "sourceId" : "15",
+        "destinationId" : "17",
+        "id" : "43",
+        "sourceId" : "16",
         "tags" : "Relationship"
       }, {
-        "destinationId" : "18",
-        "id" : "43",
-        "sourceId" : "15",
+        "destinationId" : "19",
+        "id" : "44",
+        "sourceId" : "16",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,Digital Screening System"
     }, {
       "documentation" : { },
-      "id" : "16",
+      "id" : "17",
       "name" : "Breast Screening Information Service (BSIS)",
       "properties" : {
         "structurizr.dsl.identifier" : "bsis"
@@ -313,7 +328,7 @@
       "tags" : "Element,Software System,Digital Screening System"
     }, {
       "documentation" : { },
-      "id" : "17",
+      "id" : "18",
       "name" : "Iuvo Clin-ePost",
       "properties" : {
         "structurizr.dsl.identifier" : "iuvo"
@@ -321,169 +336,169 @@
       "relationships" : [ {
         "description" : "participant data",
         "destinationId" : "8",
-        "id" : "28",
-        "sourceId" : "17",
+        "id" : "29",
+        "sourceId" : "18",
         "tags" : "Relationship"
       }, {
         "description" : "screening episode outcomes",
-        "destinationId" : "14",
-        "id" : "32",
-        "sourceId" : "17",
+        "destinationId" : "15",
+        "id" : "33",
+        "sourceId" : "18",
         "tags" : "Relationship"
       }, {
         "description" : "EDIFACT send outcome",
         "destinationId" : "2",
-        "id" : "77",
-        "sourceId" : "17",
+        "id" : "78",
+        "sourceId" : "18",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,Outsourced System"
     }, {
       "documentation" : { },
-      "id" : "18",
+      "id" : "19",
       "name" : "Local Picture and Archiving System (PACS)",
       "properties" : {
         "structurizr.dsl.identifier" : "local_pacs"
       },
       "relationships" : [ {
-        "destinationId" : "15",
-        "id" : "44",
-        "sourceId" : "18",
+        "destinationId" : "16",
+        "id" : "45",
+        "sourceId" : "19",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,External System"
     }, {
       "documentation" : { },
-      "id" : "19",
+      "id" : "20",
       "name" : "Breast screening After Radiotherapy Dataset",
       "properties" : {
         "structurizr.dsl.identifier" : "bard"
       },
       "relationships" : [ {
         "description" : "manual request for adding people to cohort",
-        "destinationId" : "15",
-        "id" : "25",
-        "sourceId" : "19",
+        "destinationId" : "16",
+        "id" : "26",
+        "sourceId" : "20",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,External System"
     }, {
       "documentation" : { },
-      "id" : "20",
+      "id" : "21",
       "name" : "Screening History Information Management (SHIM)",
       "properties" : {
         "structurizr.dsl.identifier" : "shim"
       },
       "relationships" : [ {
         "description" : "ODBC queries via SSH tunnel over the health and social care network",
-        "destinationId" : "15",
-        "id" : "26",
-        "sourceId" : "20",
+        "destinationId" : "16",
+        "id" : "27",
+        "sourceId" : "21",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,External System"
     }, {
       "documentation" : { },
-      "id" : "21",
+      "id" : "22",
       "name" : "Imaging Modality (MRI, Mammography, Ultrasound)",
       "properties" : {
         "structurizr.dsl.identifier" : "modality"
       },
       "relationships" : [ {
         "description" : "push images",
-        "destinationId" : "18",
-        "id" : "45",
-        "sourceId" : "21",
+        "destinationId" : "19",
+        "id" : "46",
+        "sourceId" : "22",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,External System"
     }, {
       "documentation" : { },
-      "id" : "22",
+      "id" : "23",
       "name" : "Lab Information Systems (LIMS)",
       "properties" : {
         "structurizr.dsl.identifier" : "lims"
       },
       "relationships" : [ {
         "description" : "manual entry",
-        "destinationId" : "15",
-        "id" : "46",
-        "sourceId" : "22",
+        "destinationId" : "16",
+        "id" : "47",
+        "sourceId" : "23",
         "tags" : "Relationship"
       }, {
         "description" : "lab results",
         "destinationId" : "8",
-        "id" : "57",
-        "sourceId" : "22",
+        "id" : "58",
+        "sourceId" : "23",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,External System"
     }, {
       "documentation" : { },
-      "id" : "47",
+      "id" : "48",
       "name" : "CSMS",
       "properties" : {
         "structurizr.dsl.identifier" : "csms"
       },
       "relationships" : [ {
         "description" : "cohort",
-        "destinationId" : "48",
-        "id" : "51",
-        "sourceId" : "47",
+        "destinationId" : "49",
+        "id" : "52",
+        "sourceId" : "48",
         "tags" : "Relationship"
       }, {
         "description" : "notifications to participants",
         "destinationId" : "9",
-        "id" : "54",
-        "sourceId" : "47",
+        "id" : "55",
+        "sourceId" : "48",
         "tags" : "Relationship"
       }, {
         "description" : "letters to participants",
-        "destinationId" : "49",
-        "id" : "55",
-        "sourceId" : "47",
+        "destinationId" : "50",
+        "id" : "56",
+        "sourceId" : "48",
         "tags" : "Relationship"
       }, {
         "description" : "Emails to GP Practices",
-        "destinationId" : "11",
-        "id" : "56",
-        "sourceId" : "47",
+        "destinationId" : "12",
+        "id" : "57",
+        "sourceId" : "48",
         "tags" : "Relationship"
       }, {
-        "destinationId" : "12",
-        "id" : "61",
-        "sourceId" : "47",
+        "destinationId" : "13",
+        "id" : "62",
+        "sourceId" : "48",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,Digital Screening System"
     }, {
       "documentation" : { },
-      "id" : "48",
+      "id" : "49",
       "name" : "Cervical Home Testing",
       "properties" : {
         "structurizr.dsl.identifier" : "cervical_home_testing"
       },
       "relationships" : [ {
         "description" : "invitation flag",
-        "destinationId" : "47",
-        "id" : "52",
-        "sourceId" : "48",
+        "destinationId" : "48",
+        "id" : "53",
+        "sourceId" : "49",
         "tags" : "Relationship"
       }, {
-        "destinationId" : "62",
-        "id" : "63",
-        "sourceId" : "48",
+        "destinationId" : "63",
+        "id" : "64",
+        "sourceId" : "49",
         "tags" : "Relationship"
       }, {
         "destinationId" : "9",
-        "id" : "64",
-        "sourceId" : "48",
+        "id" : "65",
+        "sourceId" : "49",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,Digital Screening System"
     }, {
       "documentation" : { },
-      "id" : "49",
+      "id" : "50",
       "name" : "Capita Notifications",
       "properties" : {
         "structurizr.dsl.identifier" : "capita_notifications"
@@ -491,7 +506,7 @@
       "tags" : "Element,Software System,Outsourced System"
     }, {
       "documentation" : { },
-      "id" : "62",
+      "id" : "63",
       "name" : "Cervical Home Testing Provider",
       "properties" : {
         "structurizr.dsl.identifier" : "cervical_home_testing_provider"
@@ -499,46 +514,46 @@
       "tags" : "Element,Software System,External System"
     }, {
       "documentation" : { },
-      "id" : "65",
+      "id" : "66",
       "name" : "Bowel Cancer Screening System (BCSS)",
       "properties" : {
         "structurizr.dsl.identifier" : "bcss"
       },
       "relationships" : [ {
         "description" : "ODI ETL",
-        "destinationId" : "66",
-        "id" : "70",
-        "sourceId" : "65",
+        "destinationId" : "67",
+        "id" : "71",
+        "sourceId" : "66",
         "tags" : "Relationship"
       }, {
         "description" : "post letters to participants (manual?)",
-        "destinationId" : "68",
-        "id" : "73",
-        "sourceId" : "65",
+        "destinationId" : "69",
+        "id" : "74",
+        "sourceId" : "66",
         "tags" : "Relationship"
       }, {
         "description" : "FIT requests",
-        "destinationId" : "67",
-        "id" : "75",
-        "sourceId" : "65",
+        "destinationId" : "68",
+        "id" : "76",
+        "sourceId" : "66",
         "tags" : "Relationship"
       }, {
         "description" : "outcome",
-        "destinationId" : "17",
-        "id" : "76",
-        "sourceId" : "65",
+        "destinationId" : "18",
+        "id" : "77",
+        "sourceId" : "66",
         "tags" : "Relationship"
       }, {
         "description" : "notifications to participants",
         "destinationId" : "9",
-        "id" : "79",
-        "sourceId" : "65",
+        "id" : "80",
+        "sourceId" : "66",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,Digital Screening System"
     }, {
       "documentation" : { },
-      "id" : "66",
+      "id" : "67",
       "name" : "Bowel OBIEE",
       "properties" : {
         "structurizr.dsl.identifier" : "bowel_obiee"
@@ -547,22 +562,22 @@
     }, {
       "description" : "Provides results from FIT Analyser",
       "documentation" : { },
-      "id" : "67",
+      "id" : "68",
       "name" : "FIT Kit Middleware",
       "properties" : {
         "structurizr.dsl.identifier" : "fit_middleware"
       },
       "relationships" : [ {
         "description" : "FIT results",
-        "destinationId" : "65",
-        "id" : "74",
-        "sourceId" : "67",
+        "destinationId" : "66",
+        "id" : "75",
+        "sourceId" : "68",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,Outsourced System"
     }, {
       "documentation" : { },
-      "id" : "68",
+      "id" : "69",
       "name" : "RDI",
       "properties" : {
         "structurizr.dsl.identifier" : "rdi"
@@ -571,23 +586,23 @@
     }, {
       "description" : "National Disease Registration Service",
       "documentation" : { },
-      "id" : "69",
+      "id" : "70",
       "name" : "NDRS",
       "properties" : {
         "structurizr.dsl.identifier" : "ndrs"
       },
       "relationships" : [ {
         "description" : "lynch cohort (high risk)",
-        "destinationId" : "65",
-        "id" : "72",
-        "sourceId" : "69",
+        "destinationId" : "66",
+        "id" : "73",
+        "sourceId" : "70",
         "tags" : "Relationship"
       } ],
       "tags" : "Element,Software System,External System"
     }, {
       "description" : "Outsourced national system with 38 local providers to access it",
       "documentation" : { },
-      "id" : "81",
+      "id" : "82",
       "name" : "SMaRT",
       "properties" : {
         "structurizr.dsl.identifier" : "aaa"
@@ -595,45 +610,74 @@
       "tags" : "Element,Software System,Outsourced System"
     }, {
       "documentation" : { },
-      "id" : "83",
+      "id" : "84",
       "name" : "HIC",
       "properties" : {
         "structurizr.dsl.identifier" : "hic"
       },
       "relationships" : [ {
-        "destinationId" : "84",
-        "id" : "89",
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       }, {
         "id" : "73"
       }, {
-        "id" : "74",
+        "id" : "74"
+      }, {
+        "id" : "75",
         "vertices" : [ {
           "x" : 2458,
-          "y" : 8129
+          "y" : 9254
         } ]
       }, {
-        "id" : "75"
+        "id" : "76"
       }, {
-        "id" : "76",
+        "id" : "77",
         "vertices" : [ {
           "x" : 2158,
-          "y" : 6487
+          "y" : 7612
         } ]
       }, {
-        "id" : "77"
+        "id" : "78"
       }, {
-        "id" : "78",
+        "id" : "79",
         "vertices" : [ {
           "x" : 1708,
-          "y" : 6487
+          "y" : 7612
         } ]
       }, {
-        "id" : "79",
+        "id" : "80",
         "vertices" : [ {
           "x" : 3658,
-          "y" : 7071
+          "y" : 8196
         } ]
       }, {
-        "id" : "80"
-      }, {
-        "id" : "82"
+        "id" : "81"
       }, {
-        "id" : "86"
+        "id" : "83"
       }, {
         "id" : "87"
       }, {
@@ -1456,6 +1550,14 @@
         "id" : "89"
       }, {
         "id" : "90"
+      }, {
+        "id" : "91"
+      }, {
+        "id" : "94"
+      }, {
+        "id" : "95"
+      }, {
+        "id" : "96"
       } ]
     } ]
   }