diff --git a/app/aws/s3.py b/app/aws/s3.py
index 4f448535a..e226f88c2 100644
--- a/app/aws/s3.py
+++ b/app/aws/s3.py
@@ -2,7 +2,6 @@ import csv
 import datetime
 import re
 import time
-from concurrent.futures import ThreadPoolExecutor
 from io import StringIO
 
 import botocore
@@ -25,8 +24,15 @@ s3_client = None
 s3_resource = None
 
 
+def get_service_id_from_key(key):
+    key = key.replace("service-", "")
+    key = key.split("/")
+    key = key[0].replace("-notify", "")
+    return key
+
+
 def set_job_cache(key, value):
-    current_app.logger.debug(f"Setting {key} in the job_cache.")
+    current_app.logger.debug(f"Setting {key} in the job_cache to {value}.")
     job_cache = current_app.config["job_cache"]
     job_cache[key] = (value, time.time() + 8 * 24 * 60 * 60)
 
@@ -37,7 +43,7 @@ def get_job_cache(key):
     if ret is None:
         current_app.logger.warning(f"Could not find {key} in the job_cache.")
     else:
-        current_app.logger.debug(f"Got {key} from job_cache.")
+        current_app.logger.debug(f"Got {key} from job_cache with value {ret}.")
     return ret
 
 
@@ -185,18 +191,20 @@ def read_s3_file(bucket_name, object_key, s3res):
     """
     try:
         job_id = get_job_id_from_s3_object_key(object_key)
+        service_id = get_service_id_from_key(object_key)
+
         if get_job_cache(job_id) is None:
-            object = (
+            job = (
                 s3res.Object(bucket_name, object_key)
                 .get()["Body"]
                 .read()
                 .decode("utf-8")
             )
-            set_job_cache(job_id, object)
-            set_job_cache(f"{job_id}_phones", extract_phones(object))
+            set_job_cache(job_id, job)
+            set_job_cache(f"{job_id}_phones", extract_phones(job, service_id, job_id))
             set_job_cache(
                 f"{job_id}_personalisation",
-                extract_personalisation(object),
+                extract_personalisation(job),
             )
 
     except LookupError:
@@ -217,8 +225,8 @@ def get_s3_files():
         f"job_cache length before regen: {len_job_cache()} #notify-debug-admin-1200"
     )
     try:
-        with ThreadPoolExecutor() as executor:
-            executor.map(lambda key: read_s3_file(bucket_name, key, s3res), object_keys)
+        for object_key in object_keys:
+            read_s3_file(bucket_name, object_key, s3res)
     except Exception:
         current_app.logger.exception("Connection pool issue")
 
diff --git a/tests/app/aws/test_s3.py b/tests/app/aws/test_s3.py
index e58a27275..cd6b76962 100644
--- a/tests/app/aws/test_s3.py
+++ b/tests/app/aws/test_s3.py
@@ -39,7 +39,7 @@ default_region = getenv("CSV_AWS_REGION")
 
 def single_s3_object_stub(key="foo", last_modified=None):
     return {
-        "ETag": '"d41d8cd98f00b204e9800998ecf8427e"',
+        "ETag": '"d"',
         "Key": key,
         "LastModified": last_modified or utc_now(),
     }
@@ -420,29 +420,17 @@ def test_get_s3_files_success(client, mocker):
         "CSV_UPLOAD_BUCKET": {"bucket": "test-bucket"},
         "job_cache": {},
     }
-    mock_thread_pool_executor = mocker.patch("app.aws.s3.ThreadPoolExecutor")
     mock_read_s3_file = mocker.patch("app.aws.s3.read_s3_file")
     mock_list_s3_objects = mocker.patch("app.aws.s3.list_s3_objects")
     mock_get_s3_resource = mocker.patch("app.aws.s3.get_s3_resource")
     mock_list_s3_objects.return_value = ["file1.csv", "file2.csv"]
     mock_s3_resource = MagicMock()
     mock_get_s3_resource.return_value = mock_s3_resource
-    mock_executor = MagicMock()
-
-    def mock_map(func, iterable):
-        for item in iterable:
-            func(item)
-
-    mock_executor.map.side_effect = mock_map
-    mock_thread_pool_executor.return_value.__enter__.return_value = mock_executor
 
     get_s3_files()
 
     # mock_current_app.config.__getitem__.assert_called_once_with("CSV_UPLOAD_BUCKET")
     mock_list_s3_objects.assert_called_once()
-    mock_thread_pool_executor.assert_called_once()
-
-    mock_executor.map.assert_called_once()
 
     calls = [
         (("test-bucket", "file1.csv", mock_s3_resource),),
@@ -615,15 +603,6 @@ def test_get_s3_files_handles_exception(mocker):
     mock_read_s3_file = mocker.patch(
         "app.aws.s3.read_s3_file", side_effect=[None, Exception("exception here")]
     )
-
-    mock_thread_pool_executor = mocker.patch("app.aws.s3.ThreadPoolExecutor")
-    mock_executor = mock_thread_pool_executor.return_value.__enter__.return_value
-
-    def mock_map(func, iterable):
-        for item in iterable:
-            func(item)
-
-    mock_executor.map.side_effect = mock_map
     get_s3_files()
 
     calls = [