diff --git a/app/controllers/simplified-account/settings/card-types/card-types.controller.js b/app/controllers/simplified-account/settings/card-types/card-types.controller.js
index f579e6e1a..2b32d8fbc 100644
--- a/app/controllers/simplified-account/settings/card-types/card-types.controller.js
+++ b/app/controllers/simplified-account/settings/card-types/card-types.controller.js
@@ -5,9 +5,9 @@ const { formatSimplifiedAccountPathsFor } = require('@utils/simplified-account/f
 const paths = require('@root/paths')
 
 async function get (req, res, next) {
-  const serviceId = req.service.externalId
+  const serviceExternalId = req.service.externalId
   const accountType = req.account.type
-  const isAdminUser = req.user.isAdminUserForService(serviceId)
+  const isAdminUser = req.user.isAdminUserForService(serviceExternalId)
   const messages = res.locals?.flash?.messages ?? []
   let noCardTypesSelectedError
   if (res.locals?.flash?.noCardTypesSelectedError) {
@@ -15,7 +15,7 @@ async function get (req, res, next) {
   }
   try {
     const { card_types: allCards } = await getAllCardTypes()
-    const { card_types: acceptedCards } = await getAcceptedCardTypesForServiceAndAccountType(serviceId, accountType)
+    const { card_types: acceptedCards } = await getAcceptedCardTypesForServiceAndAccountType(serviceExternalId, accountType)
     const cardTypesSelected = noCardTypesSelectedError ? [] : acceptedCards
     const currentAcceptedCardTypeIds = acceptedCards.map(card => card.id)
     const cardTypes = formatCardTypesForTemplate(allCards, cardTypesSelected, req.account, isAdminUser)
@@ -32,8 +32,7 @@ async function get (req, res, next) {
 }
 
 async function post (req, res, next) {
-  console.log(req.body)
-  const serviceId = req.service.externalId
+  const serviceExternalId = req.service.externalId
   const accountType = req.account.type
   const selectedDebitCards = (typeof req.body.debit === 'string' ? [req.body.debit] : req.body.debit) || []
   const selectedCreditCards = (typeof req.body.credit === 'string' ? [req.body.credit] : req.body.credit) || []
@@ -41,7 +40,7 @@ async function post (req, res, next) {
   const currentAcceptedCardTypeIds = req.body.currentAcceptedCardTypeIds ? req.body.currentAcceptedCardTypeIds.split(',') : []
   if (!selectedDebitCards.length && !selectedCreditCards.length) {
     req.flash('noCardTypesSelectedError', 'You must choose at least one card')
-    return res.redirect(formatSimplifiedAccountPathsFor(paths.simplifiedAccount.settings.cardTypes.index, serviceId, accountType))
+    return res.redirect(formatSimplifiedAccountPathsFor(paths.simplifiedAccount.settings.cardTypes.index, serviceExternalId, accountType))
   }
 
   const noChangesToAcceptedCardTypes = (
@@ -50,7 +49,7 @@ async function post (req, res, next) {
   )
   if (noChangesToAcceptedCardTypes) {
     return res.redirect(
-      formatSimplifiedAccountPathsFor(paths.simplifiedAccount.settings.cardTypes.index, serviceId, accountType)
+      formatSimplifiedAccountPathsFor(paths.simplifiedAccount.settings.cardTypes.index, serviceExternalId, accountType)
     )
   }
 
@@ -58,10 +57,10 @@ async function post (req, res, next) {
     const payload = {
       card_types: selectedCardTypeIds
     }
-    await postAcceptedCardsForServiceAndAccountType(serviceId, accountType, payload)
+    await postAcceptedCardsForServiceAndAccountType(serviceExternalId, accountType, payload)
     req.flash('messages', { state: 'success', icon: '✓', heading: 'Accepted card types have been updated' })
     return res.redirect(
-      formatSimplifiedAccountPathsFor(paths.simplifiedAccount.settings.cardTypes.index, serviceId, accountType)
+      formatSimplifiedAccountPathsFor(paths.simplifiedAccount.settings.cardTypes.index, serviceExternalId, accountType)
     )
   } catch (err) {
     next(err)
diff --git a/app/controllers/simplified-account/settings/card-types/card-types.controller.test.js b/app/controllers/simplified-account/settings/card-types/card-types.controller.test.js
index 200bc7227..6939ccb7f 100644
--- a/app/controllers/simplified-account/settings/card-types/card-types.controller.test.js
+++ b/app/controllers/simplified-account/settings/card-types/card-types.controller.test.js
@@ -6,13 +6,13 @@ const userFixtures = require('@test/fixtures/user.fixtures')
 const paths = require('@root/paths')
 
 const ACCOUNT_TYPE = 'live'
-const SERVICE_ID = 'service-id-123abc'
+const SERVICE_EXTERNAL_ID = 'service-id-123abc'
 
 const adminUser = new User(userFixtures.validUserResponse({
   external_id: 'user-id-for-admin-user',
   service_roles: {
     service: {
-      service: { external_id: SERVICE_ID },
+      service: { external_id: SERVICE_EXTERNAL_ID },
       role: { name: 'admin' }
     }
   }
@@ -24,7 +24,7 @@ const viewOnlyUser = new User(userFixtures.validUserResponse(
     service_roles: {
       service:
         {
-          service: { external_id: SERVICE_ID },
+          service: { external_id: SERVICE_EXTERNAL_ID },
           role: { name: 'view-only' }
         }
     }
@@ -59,7 +59,7 @@ const mockGetAcceptedCardTypesForServiceAndAccountType = sinon.stub().resolves({
 const mockPostAcceptedCardsForServiceAndAccountType = sinon.stub().resolves({})
 
 const { req, res, nextRequest, call } = new ControllerTestBuilder('@controllers/simplified-account/settings/card-types/card-types.controller')
-  .withServiceExternalId(SERVICE_ID)
+  .withServiceExternalId(SERVICE_EXTERNAL_ID)
   .withAccountType(ACCOUNT_TYPE)
   .withStubs({
     '@utils/response': { response: mockResponse },
diff --git a/app/services/clients/connector.client.js b/app/services/clients/connector.client.js
index 2eff2c979..8d17d95e7 100644
--- a/app/services/clients/connector.client.js
+++ b/app/services/clients/connector.client.js
@@ -258,14 +258,14 @@ ConnectorClient.prototype = {
   },
 
   /**
-   * Retrieves the accepted card Types for the given external service external id and account type
-   * @param serviceId (required)
-   * @param accountType (required)
+   * Retrieves the accepted card Types for the given service external id and account type
+   * @param {String} serviceExternalId
+   * @param {String} accountType
    * @returns {Promise<Object>}
    */
-  getAcceptedCardsForServiceAndAccountType: async function (serviceId, accountType) {
-    const url = `${this.connectorUrl}/v1/frontend/service/{serviceId}/account/{accountType}/card-types`
-      .replace('{serviceId}', encodeURIComponent(serviceId))
+  getAcceptedCardsForServiceAndAccountType: async function (serviceExternalId, accountType) {
+    const url = `${this.connectorUrl}/v1/frontend/service/{serviceExternalId}/account/{accountType}/card-types`
+      .replace('{serviceExternalId}', encodeURIComponent(serviceExternalId))
       .replace('{accountType}', encodeURIComponent(accountType))
     configureClient(client, url)
     const response = await client.get(url, 'get accepted card types for account')
@@ -287,15 +287,15 @@ ConnectorClient.prototype = {
   },
 
   /**
-   * Updates the accepted card Types for to the given service and account type
-   * @param serviceId (required)
-   * @param accountType (required)
-   * @param payload (required)
+   * Updates the accepted card Types for the given service and account type
+   * @param {String} serviceExternalId
+   * @param {String} accountType
+   * @param {{card_types: string|string[]}} payload
    * @returns {Promise<Object>}
    */
-  postAcceptedCardsForServiceAndAccountType: async function (serviceId, accountType, payload) {
-    const url = `${this.connectorUrl}/v1/frontend/service/{serviceId}/account/{accountType}/card-types`
-      .replace('{serviceId}', encodeURIComponent(serviceId))
+  postAcceptedCardsForServiceAndAccountType: async function (serviceExternalId, accountType, payload) {
+    const url = `${this.connectorUrl}/v1/frontend/service/{serviceExternalId}/account/{accountType}/card-types`
+      .replace('{serviceExternalId}', encodeURIComponent(serviceExternalId))
       .replace('{accountType}', encodeURIComponent(accountType))
     configureClient(client, url)
     const response = await client.post(url, payload, 'post accepted card types for account')
diff --git a/app/views/simplified-account/settings/card-types/cardTypesCheckboxes.njk b/app/views/simplified-account/settings/card-types/_card-types-checkboxes.njk
similarity index 100%
rename from app/views/simplified-account/settings/card-types/cardTypesCheckboxes.njk
rename to app/views/simplified-account/settings/card-types/_card-types-checkboxes.njk
diff --git a/app/views/simplified-account/settings/card-types/cardTypesList.njk b/app/views/simplified-account/settings/card-types/_card-types-list.njk
similarity index 100%
rename from app/views/simplified-account/settings/card-types/cardTypesList.njk
rename to app/views/simplified-account/settings/card-types/_card-types-list.njk
diff --git a/app/views/simplified-account/settings/card-types/index.njk b/app/views/simplified-account/settings/card-types/index.njk
index 8934820d9..e9b19de41 100644
--- a/app/views/simplified-account/settings/card-types/index.njk
+++ b/app/views/simplified-account/settings/card-types/index.njk
@@ -23,9 +23,9 @@
   <h1 class="govuk-heading-l page-title">Card types</h1>
 
   {% if isAdminUser %}
-    {% include "./cardTypesCheckboxes.njk" %}
+    {% include "./_card-types-checkboxes.njk" %}
   {% else %}
-    {% include "./cardTypesList.njk" %}
+    {% include "./_card-types-list.njk" %}
   {% endif %}
 
 {% endblock %}