diff --git a/groups/heritage-shared-infrastructure/README.md b/groups/heritage-shared-infrastructure/README.md
index 014d71c..3fd7e9d 100644
--- a/groups/heritage-shared-infrastructure/README.md
+++ b/groups/heritage-shared-infrastructure/README.md
@@ -4,7 +4,6 @@ Hosts the following RDS instances as these are shared across multiple services.
 * BCD
 * CHData
 * CHD
-* WCK
 * CICS
 * FES
 
@@ -58,7 +57,6 @@ Hosts the following RDS instances as these are shared across multiple services.
 | [vault_generic_secret.cics_rds](https://registry.terraform.io/providers/hashicorp/vault/latest/docs/data-sources/generic_secret) | data source |
 | [vault_generic_secret.fes_rds](https://registry.terraform.io/providers/hashicorp/vault/latest/docs/data-sources/generic_secret) | data source |
 | [vault_generic_secret.internal_cidrs](https://registry.terraform.io/providers/hashicorp/vault/latest/docs/data-sources/generic_secret) | data source |
-| [vault_generic_secret.wck_rds](https://registry.terraform.io/providers/hashicorp/vault/latest/docs/data-sources/generic_secret) | data source |
 
 ## Inputs
 
diff --git a/groups/heritage-shared-infrastructure/data.tf b/groups/heritage-shared-infrastructure/data.tf
index 2ebfeb1..33f3393 100644
--- a/groups/heritage-shared-infrastructure/data.tf
+++ b/groups/heritage-shared-infrastructure/data.tf
@@ -51,15 +51,6 @@ data "aws_security_group" "rds_ingress_cics" {
   }
 }
 
-data "aws_security_group" "rds_ingress_wck" {
-  count = length(var.rds_ingress_groups["wck"])
-  filter {
-    name   = "group-name"
-    values = [var.rds_ingress_groups["wck"][count.index]]
-  }
-}
-
-
 data "aws_route53_zone" "private_zone" {
   name         = local.internal_fqdn
   private_zone = true
@@ -85,10 +76,6 @@ data "vault_generic_secret" "chd_rds" {
   path = "applications/${var.aws_profile}/chd/rds"
 }
 
-data "vault_generic_secret" "wck_rds" {
-  path = "applications/${var.aws_profile}/wck/rds"
-}
-
 data "vault_generic_secret" "cics_rds" {
   path = "applications/${var.aws_profile}/cics/rds"
 }
diff --git a/groups/heritage-shared-infrastructure/locals.tf b/groups/heritage-shared-infrastructure/locals.tf
index 8912d16..eb79076 100644
--- a/groups/heritage-shared-infrastructure/locals.tf
+++ b/groups/heritage-shared-infrastructure/locals.tf
@@ -8,7 +8,6 @@ locals {
     bcd    = data.vault_generic_secret.bcd_rds.data
     chdata = data.vault_generic_secret.chdata_rds.data
     chd    = data.vault_generic_secret.chd_rds.data
-    wck    = data.vault_generic_secret.wck_rds.data
     cics   = data.vault_generic_secret.cics_rds.data
     fes    = data.vault_generic_secret.fes_rds.data
   }
@@ -52,15 +51,6 @@ locals {
         source_security_group_id = sg_data.id
       }
     ])
-    "wck" = flatten([
-      for sg_data in data.aws_security_group.rds_ingress_wck : {
-        from_port                = 1521
-        to_port                  = 1521
-        protocol                 = "tcp"
-        description              = "Access from ${sg_data.tags.Name}"
-        source_security_group_id = sg_data.id
-      }
-    ])
   }
 
   rds_databases_requiring_app_access = {
@@ -69,12 +59,10 @@ locals {
 
   chd_dba_dev_ingress_cidrs_list    = jsondecode(data.vault_generic_secret.chd_rds.data_json)["dba-dev-cidrs"]
   chdata_dba_dev_ingress_cidrs_list = jsondecode(data.vault_generic_secret.chdata_rds.data_json)["dba-dev-cidrs"]
-  wck_dba_dev_ingress_cidrs_list    = jsondecode(data.vault_generic_secret.wck_rds.data_json)["dba-dev-cidrs"]
 
   dba_dev_ingress_instances_map = {
     chd    = local.chd_dba_dev_ingress_cidrs_list,
     chdata = local.chdata_dba_dev_ingress_cidrs_list,
-    wck    = local.wck_dba_dev_ingress_cidrs_list
   }
 
   dba_dev_ingress_rules_map = merge([
diff --git a/groups/heritage-shared-infrastructure/profiles/heritage-development-eu-west-2/vars b/groups/heritage-shared-infrastructure/profiles/heritage-development-eu-west-2/vars
index 8ca811d..73b63ee 100644
--- a/groups/heritage-shared-infrastructure/profiles/heritage-development-eu-west-2/vars
+++ b/groups/heritage-shared-infrastructure/profiles/heritage-development-eu-west-2/vars
@@ -130,44 +130,6 @@ rds_databases = {
       }
     ]
   },
-  wck = {
-    instance_class             = "db.t3.medium"
-    allocated_storage          = 20
-    backup_retention_period    = 2
-    multi_az                   = false
-    engine                     = "oracle-se2"
-    major_engine_version       = "19"
-    engine_version             = "19"
-    auto_minor_version_upgrade = true
-    license_model              = "license-included"
-    rds_maintenance_window     = "sun:12:00-sun:15:00"
-    rds_backup_window          = "03:00-06:00"
-    rds_log_exports            = [
-          "alert",
-          "audit",
-          "listener",
-          "trace"
-    ],
-    rds_onpremise_access = [
-      "192.168.90.0/24",
-      "192.168.70.0/24"
-    ]
-    rds_app_access = []
-    per_instance_options = [
-      {
-        option_name = "Timezone"
-        option_settings = [
-          {
-            name  = "TIME_ZONE"
-            value = "Europe/London"
-          },
-        ]
-      },
-      {
-        option_name = "JVM"
-      }
-    ]
-  },
   cics = {
     instance_class             = "db.t3.medium"
     allocated_storage          = 20
@@ -432,81 +394,6 @@ parameter_group_settings = {
       value = "AUTO"
     },
   ],
-  wck = [
-    {
-      name  = "aq_tm_processes"
-      value = "6"
-    },
-    {
-      name         = "compatible"
-      value        = "19.0.0"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "db_file_multiblock_read_count"
-      value = "64"
-    },
-    {
-      name  = "job_queue_processes"
-      value = "1000"
-    },
-    {
-      name  = "nls_length_semantics"
-      value = "CHAR"
-    },
-    {
-      name  = "open_cursors"
-      value = "3000"
-    },
-    {
-      name  = "parallel_max_servers"
-      value = "20"
-    },
-    {
-      name  = "parallel_min_servers"
-      value = "10"
-    },
-    {
-      name         = "pga_aggregate_limit"
-      value        = "2147483648"
-      apply_method = "pending-reboot"
-    },
-    {
-      name         = "processes"
-      value        = "4400"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "remote_dependencies_mode"
-      value = "SIGNATURE"
-    },
-    {
-      name         = "sessions"
-      value        = "6720"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "sqlnetora.sqlnet.allowed_logon_version_client"
-      value = "10"
-    },
-    {
-      name  = "sqlnetora.sqlnet.allowed_logon_version_server"
-      value = "10"
-    },
-    {
-      name         = "timed_statistics"
-      value        = "TRUE"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "undo_retention"
-      value = "900"
-    },
-    {
-      name  = "workarea_size_policy"
-      value = "AUTO"
-    },
-  ],
   cics = [
     {
       name  = "aq_tm_processes"
@@ -609,14 +496,6 @@ rds_ingress_groups = {
   ],
   cics = [
     "sgr-cics-asg*"
-  ],
-  wck = [
-    "sgr-ewf-fe-asg*",
-    "sgr-ewf-bep-asg*",
-    "ewf-frontend-tuxedo*",
-    "sgr-chd-bep-asg*",
-    "sgr-wck-fe-asg*",
-    "sgr-wck-bep-asg*"
   ]
 }
 
@@ -640,11 +519,6 @@ rds_start_stop_schedule = {
     rds_schedule_enable = true
     rds_start_schedule = "cron(0 5 * * ? *)"
     rds_stop_schedule = "cron(0 21 * * ? *)"
-  },
-  wck = {
-    rds_schedule_enable = true
-    rds_start_schedule = "cron(0 5 * * ? *)"
-    rds_stop_schedule = "cron(0 21 * * ? *)"
   }
 }
 
@@ -668,10 +542,5 @@ rds_cloudwatch_alarms = {
     alarm_actions_enabled = false
     alarm_topic_name = ""
     alarm_topic_name_ooh = ""
-  },
-  wck = {
-    alarm_actions_enabled = false
-    alarm_topic_name = ""
-    alarm_topic_name_ooh = ""
   }
 }
diff --git a/groups/heritage-shared-infrastructure/profiles/heritage-live-eu-west-2/vars b/groups/heritage-shared-infrastructure/profiles/heritage-live-eu-west-2/vars
index 766b600..64660f3 100644
--- a/groups/heritage-shared-infrastructure/profiles/heritage-live-eu-west-2/vars
+++ b/groups/heritage-shared-infrastructure/profiles/heritage-live-eu-west-2/vars
@@ -119,41 +119,6 @@ rds_databases = {
       }
     ]
   },
-  wck = {
-    instance_class             = "db.m5.large"
-    allocated_storage          = 300
-    backup_retention_period    = 14
-    multi_az                   = true
-    engine                     = "oracle-se2"
-    major_engine_version       = "19"
-    engine_version             = "19"
-    auto_minor_version_upgrade = false
-    license_model              = "license-included"
-    rds_maintenance_window     = "Sat:10:00-Sat:13:00"
-    rds_backup_window          = "03:00-06:00"
-    rds_log_exports            = [
-          "alert",
-          "audit",
-          "listener",
-          "trace"
-    ],
-    rds_onpremise_access = [
-      "192.168.90.0/24",
-      "192.168.70.0/24"
-    ]
-    rds_app_access = []
-    per_instance_options = [
-      {
-        option_name = "Timezone"
-        option_settings = [
-          {
-            name  = "TIME_ZONE"
-            value = "Europe/London"
-          },
-        ]
-      }
-    ]
-  },
   cics = {
     instance_class             = "db.m5.large"
     allocated_storage          = 30
@@ -418,81 +383,6 @@ parameter_group_settings = {
       value = "AUTO"
     },
   ],
-  wck = [
-    {
-      name  = "aq_tm_processes"
-      value = "6"
-    },
-    {
-      name         = "compatible"
-      value        = "19.0.0"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "db_file_multiblock_read_count"
-      value = "64"
-    },
-    {
-      name  = "job_queue_processes"
-      value = "1000"
-    },
-    {
-      name  = "nls_length_semantics"
-      value = "CHAR"
-    },
-    {
-      name  = "open_cursors"
-      value = "3000"
-    },
-    {
-      name  = "parallel_max_servers"
-      value = "20"
-    },
-    {
-      name  = "parallel_min_servers"
-      value = "10"
-    },
-    {
-      name         = "pga_aggregate_limit"
-      value        = "2147483648"
-      apply_method = "pending-reboot"
-    },
-    {
-      name         = "processes"
-      value        = "4400"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "remote_dependencies_mode"
-      value = "SIGNATURE"
-    },
-    {
-      name         = "sessions"
-      value        = "6720"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "sqlnetora.sqlnet.allowed_logon_version_client"
-      value = "10"
-    },
-    {
-      name  = "sqlnetora.sqlnet.allowed_logon_version_server"
-      value = "10"
-    },
-    {
-      name         = "timed_statistics"
-      value        = "TRUE"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "undo_retention"
-      value = "900"
-    },
-    {
-      name  = "workarea_size_policy"
-      value = "AUTO"
-    },
-  ],
   cics = [
     {
       name  = "aq_tm_processes"
@@ -600,14 +490,6 @@ rds_ingress_groups = {
   cics = [
     "sgr-cics-asg*",
     "sgr-windows-workloads-bus-obj-1-server*"
-  ],
-  wck = [
-    "sgr-ewf-fe-asg*",
-    "sgr-ewf-bep-asg*",
-    "ewf-frontend-tuxedo*",
-    "sgr-chd-bep-asg*",
-    "sgr-wck-fe-asg*",
-    "sgr-wck-bep-asg*"
   ]
 }
 
@@ -631,11 +513,6 @@ rds_start_stop_schedule = {
     rds_schedule_enable = false
     rds_start_schedule = ""
     rds_stop_schedule = ""
-  },
-  wck = {
-    rds_schedule_enable = false
-    rds_start_schedule = ""
-    rds_stop_schedule = ""
   }
 }
 
@@ -659,10 +536,5 @@ rds_cloudwatch_alarms = {
     alarm_actions_enabled = true
     alarm_topic_name = "Email_Alerts"
     alarm_topic_name_ooh = "Phonecall_Alerts"
-  },
-  wck = {
-    alarm_actions_enabled = true
-    alarm_topic_name = "Email_Alerts"
-    alarm_topic_name_ooh = "Phonecall_Alerts"
   }
 }
diff --git a/groups/heritage-shared-infrastructure/profiles/heritage-staging-eu-west-2/vars b/groups/heritage-shared-infrastructure/profiles/heritage-staging-eu-west-2/vars
index 1afee94..7eb9b83 100644
--- a/groups/heritage-shared-infrastructure/profiles/heritage-staging-eu-west-2/vars
+++ b/groups/heritage-shared-infrastructure/profiles/heritage-staging-eu-west-2/vars
@@ -118,41 +118,6 @@ rds_databases = {
       },
     ]
   },
-  wck = {
-    instance_class             = "db.m5.large"
-    allocated_storage          = 30
-    backup_retention_period    = 2
-    multi_az                   = false
-    engine                     = "oracle-se2"
-    major_engine_version       = "19"
-    engine_version             = "19"
-    auto_minor_version_upgrade = false
-    license_model              = "license-included"
-    rds_maintenance_window     = "Wed:00:00-Wed:03:00"
-    rds_backup_window          = "03:00-06:00"
-    rds_log_exports            = [
-          "alert",
-          "audit",
-          "listener",
-          "trace"
-    ],
-    rds_onpremise_access = [
-      "192.168.90.0/24",
-      "192.168.70.0/24"
-    ]
-    rds_app_access = []
-    per_instance_options = [
-      {
-        option_name = "Timezone"
-        option_settings = [
-          {
-            name  = "TIME_ZONE"
-            value = "Europe/London"
-          },
-        ]
-      },
-    ]
-  },
   cics = {
     instance_class             = "db.m5.large"
     allocated_storage          = 30
@@ -416,82 +381,7 @@ parameter_group_settings = {
       name  = "workarea_size_policy"
       value = "AUTO"
     },
-  ],
-  wck = [
-    {
-      name  = "aq_tm_processes"
-      value = "6"
-    },
-    {
-      name         = "compatible"
-      value        = "19.0.0"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "db_file_multiblock_read_count"
-      value = "64"
-    },
-    {
-      name  = "job_queue_processes"
-      value = "1000"
-    },
-    {
-      name  = "nls_length_semantics"
-      value = "CHAR"
-    },
-    {
-      name  = "open_cursors"
-      value = "3000"
-    },
-    {
-      name  = "parallel_max_servers"
-      value = "20"
-    },
-    {
-      name  = "parallel_min_servers"
-      value = "10"
-    },
-    {
-      name         = "pga_aggregate_limit"
-      value        = "2147483648"
-      apply_method = "pending-reboot"
-    },
-    {
-      name         = "processes"
-      value        = "4400"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "remote_dependencies_mode"
-      value = "SIGNATURE"
-    },
-    {
-      name         = "sessions"
-      value        = "6720"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "sqlnetora.sqlnet.allowed_logon_version_client"
-      value = "10"
-    },
-    {
-      name  = "sqlnetora.sqlnet.allowed_logon_version_server"
-      value = "10"
-    },
-    {
-      name         = "timed_statistics"
-      value        = "TRUE"
-      apply_method = "pending-reboot"
-    },
-    {
-      name  = "undo_retention"
-      value = "900"
-    },
-    {
-      name  = "workarea_size_policy"
-      value = "AUTO"
-    },
-  ],
+  ]
   cics = [
     {
       name  = "aq_tm_processes"
@@ -598,14 +488,6 @@ rds_ingress_groups = {
   ],
   cics = [
     "sgr-cics-asg*"
-  ],
-  wck = [
-    "sgr-ewf-fe-asg*",
-    "sgr-ewf-bep-asg*",
-    "ewf-frontend-tuxedo*",
-    "sgr-chd-bep-asg*",
-    "sgr-wck-fe-asg*",
-    "sgr-wck-bep-asg*"
   ]
 }
 
@@ -629,11 +511,6 @@ rds_start_stop_schedule = {
     rds_schedule_enable = true
     rds_start_schedule = "cron(0 5 * * ? *)"
     rds_stop_schedule = "cron(0 21 * * ? *)"
-  },
-  wck = {
-    rds_schedule_enable = true
-    rds_start_schedule = "cron(0 5 * * ? *)"
-    rds_stop_schedule = "cron(0 21 * * ? *)"
   }
 }
 
@@ -657,10 +534,5 @@ rds_cloudwatch_alarms = {
     alarm_actions_enabled = false
     alarm_topic_name = ""
     alarm_topic_name_ooh = ""
-  },
-  wck = {
-    alarm_actions_enabled = false
-    alarm_topic_name = ""
-    alarm_topic_name_ooh = ""
   }
 }
diff --git a/groups/sessions/data.tf b/groups/sessions/data.tf
index 343d06b..535d779 100644
--- a/groups/sessions/data.tf
+++ b/groups/sessions/data.tf
@@ -61,20 +61,6 @@ data "aws_security_group" "ceu_bep_asg" {
   }
 }
 
-data "aws_security_group" "wck_fe_asg" {
-  filter {
-    name   = "group-name"
-    values = ["sgr-wck-fe-asg*"]
-  }
-}
-
-data "aws_security_group" "wck_bep_asg" {
-  filter {
-    name   = "group-name"
-    values = ["sgr-wck-bep-asg*"]
-  }
-}
-
 data "aws_route53_zone" "private_zone" {
   name         = local.internal_fqdn
   private_zone = true
diff --git a/groups/sessions/rds.tf b/groups/sessions/rds.tf
index cd27406..ffad401 100644
--- a/groups/sessions/rds.tf
+++ b/groups/sessions/rds.tf
@@ -71,20 +71,6 @@ module "rds_security_group" {
       description              = "Frontend CHD"
       source_security_group_id = data.aws_security_group.chd_fe_asg.id
     },
-    {
-      from_port                = 1521
-      to_port                  = 1521
-      protocol                 = "tcp"
-      description              = "Frontend WCK"
-      source_security_group_id = data.aws_security_group.wck_fe_asg.id
-    },
-    {
-      from_port                = 1521
-      to_port                  = 1521
-      protocol                 = "tcp"
-      description              = "Backend WCK"
-      source_security_group_id = data.aws_security_group.wck_bep_asg.id
-    },
   ]
 
   egress_rules = ["all-all"]