diff --git a/app/config.py b/app/config.py
index 88384d1ad0..3f28350200 100644
--- a/app/config.py
+++ b/app/config.py
@@ -233,8 +233,8 @@ class Config(object):
     SALESFORCE_USERNAME = os.getenv("SALESFORCE_USERNAME")
     SALESFORCE_PASSWORD = os.getenv("SALESFORCE_PASSWORD")
     SALESFORCE_SECURITY_TOKEN = os.getenv("SALESFORCE_SECURITY_TOKEN")
-    CRM_GITHUB_PERSONAL_ACCESS_TOKEN = os.getenv("CRM_GITHUB_PERSONAL_ACCESS_TOKEN")
-    CRM_ORG_LIST_URL = os.getenv("CRM_ORG_LIST_URL")
+    GC_ORGANISATIONS_BUCKET_NAME = os.getenv("GC_ORGANISATIONS_BUCKET_NAME")
+    GC_ORGANISATIONS_FILENAME = os.getenv("GC_ORGANISATIONS_FILENAME", "all.json")
 
     # Logging
     DEBUG = False
@@ -748,9 +748,8 @@ class Test(Development):
     API_HOST_NAME = "http://localhost:6011"
 
     TEMPLATE_PREVIEW_API_HOST = "http://localhost:9999"
-    CRM_GITHUB_PERSONAL_ACCESS_TOKEN = "test-token"
-    CRM_ORG_LIST_URL = "https://test-url.com"
     FAILED_LOGIN_LIMIT = 0
+    GC_ORGANISATIONS_BUCKET_NAME = "test-gc-organisations"
 
 
 class Production(Config):
diff --git a/app/service/utils.py b/app/service/utils.py
index 45cf4ed444..9e3bb36d34 100644
--- a/app/service/utils.py
+++ b/app/service/utils.py
@@ -2,7 +2,7 @@
 import json
 from typing import Optional
 
-import requests
+from app.aws.s3 import get_s3_file
 from flask import current_app
 from notifications_utils.recipients import allowed_to_send_to
 from sqlalchemy.orm.exc import NoResultFound
@@ -68,14 +68,13 @@ def safelisted_members(service, key_type, is_simulated=False, allow_safelisted_r
 
 
 def get_gc_organisation_data() -> list[dict]:
-    "Returns the dataset from the gc-organisations repo"
-    response = requests.get(
-        current_app.config["CRM_ORG_LIST_URL"],
-        headers={"Authorization": f'token {current_app.config["CRM_GITHUB_PERSONAL_ACCESS_TOKEN"]}'},
+    "Returns the dataset from the gc-organisations repo, which we cache in s3"
+    file_data = get_s3_file(
+        current_app.config["GC_ORGANISATION_DATA_BUCKET_NAME"],
+        current_app.config["GC_ORGANISATIONS_FILENAME"],
     )
-    response.raise_for_status()
 
-    account_data = json.loads(response.text)
+    account_data = json.loads(file_data)
     return account_data