diff --git a/ack_backend/src/ack_processor.py b/ack_backend/src/ack_processor.py
index 4f3c4637..1d6ce669 100644
--- a/ack_backend/src/ack_processor.py
+++ b/ack_backend/src/ack_processor.py
@@ -1,5 +1,7 @@
+"""Ack lambda handler"""
+
 import json
-from log_structure_splunk import ack_function_info, convert_messsage_to_ack_row_logging_decorator
+from logging_decorators import ack_lambda_handler_logging_decorator, convert_messsage_to_ack_row_logging_decorator
 from update_ack_file import update_ack_file, create_ack_data
 
 
@@ -29,7 +31,7 @@ def convert_message_to_ack_row(message, expected_file_key, expected_created_at_f
     )
 
 
-@ack_function_info
+@ack_lambda_handler_logging_decorator
 def lambda_handler(event, context):
 
     if not event.get("Records"):
diff --git a/ack_backend/src/log_structure_splunk.py b/ack_backend/src/logging_decorators.py
similarity index 59%
rename from ack_backend/src/log_structure_splunk.py
rename to ack_backend/src/logging_decorators.py
index ddfec7b5..10409c07 100644
--- a/ack_backend/src/log_structure_splunk.py
+++ b/ack_backend/src/logging_decorators.py
@@ -1,3 +1,5 @@
+"""Decorators for logging and sending logs to Firehose"""
+
 import os
 import json
 import time
@@ -14,12 +16,23 @@ def send_log_to_firehose(log_data: dict) -> None:
     """Sends the log_message to Firehose"""
     try:
         record = {"Data": json.dumps({"event": log_data}).encode("utf-8")}
-        response = firehose_client.put_record(DeliveryStreamName=STREAM_NAME, Record=record)
-        logger.info("Log sent to Firehose: %s", response)  # TODO: Should we be logging full response?
+        firehose_client.put_record(DeliveryStreamName=STREAM_NAME, Record=record)
+        logger.info("Log sent to Firehose")
     except Exception as error:  # pylint:disable = broad-exception-caught
         logger.exception("Error sending log to Firehose: %s", error)
 
 
+def generate_and_send_logs(
+    start_time, base_log_data: dict, additional_log_data: dict, is_error_log: bool = False
+) -> None:
+    """Generates log data which includes the base_log_data, additional_log_data, and time taken (calculated using the
+    current time and given start_time) and sends them to Cloudwatch and Firehose."""
+    log_data = {**base_log_data, "time_taken": f"{round(time.time() - start_time, 5)}s", **additional_log_data}
+    log_function = logger.error if is_error_log else logger.info
+    log_function(json.dumps(log_data))
+    send_log_to_firehose(log_data)
+
+
 def convert_messsage_to_ack_row_logging_decorator(func):
     """This decorator logs the information on the conversion of a single message to an ack data row"""
 
@@ -36,45 +49,30 @@ def wrapper(message, expected_file_key, expected_created_at_formatted_string):
             message_id = message.get("row_id", "unknown")
             diagnostics = message.get("diagnostics")
 
-            diagnostics_result = process_diagnostics(diagnostics, file_key, message_id)
-
-            log_data = {
-                **base_log_data,
+            additional_log_data = {
                 "file_key": file_key,
-                "message_id": message.get("row_id", "unknown"),
+                "message_id": message_id,
                 "vaccine_type": message.get("vaccine_type", "unknown"),
                 "supplier": message.get("supplier", "unknown"),
                 "local_id": message.get("local_id", "unknown"),
                 "operation_requested": message.get("action_flag", "unknown"),
-                "time_taken": f"{round(time.time() - start_time, 5)}s",
-                **diagnostics_result,
+                **process_diagnostics(diagnostics, file_key, message_id),
             }
-
-            try:
-                logger.info(f"Function executed successfully: {json.dumps(log_data)}")
-                send_log_to_firehose(log_data)
-            except Exception:
-                logger.warning("Issue with logging")
+            generate_and_send_logs(start_time, base_log_data, additional_log_data)
 
             return result
 
-        except Exception as e:
-            log_data = {
-                "status": "fail",
-                "statusCode": 500,
-                "diagnostics": f"Error converting message to ack row: {str(e)}",
-                "date_time": str(datetime.now()),
-                "error_source": "convert_message_to_ack_row",
-            }
-            send_log_to_firehose(log_data)
+        except Exception as error:
+            additional_log_data = {"status": "fail", "statusCode": 500, "diagnostics": str(error)}
+            generate_and_send_logs(start_time, base_log_data, additional_log_data, is_error_log=True)
 
             raise
 
     return wrapper
 
 
-def ack_function_info(func):
-    """This decorator logs the execution info for the decorated function and sends it to Splunk."""
+def ack_lambda_handler_logging_decorator(func):
+    """This decorator logs the execution info for the ack lambda handler."""
 
     @wraps(func)
     def wrapper(event, context, *args, **kwargs):
@@ -84,22 +82,15 @@ def wrapper(event, context, *args, **kwargs):
 
         try:
             result = func(event, context, *args, **kwargs)
+
+            additional_log_data = {"statusCode": 200, "message": "Lambda function executed successfully!"}
+            generate_and_send_logs(start_time, base_log_data, additional_log_data)
+
             return result
 
-        except Exception as e:
-            end_time = time.time()
-            log_data = {
-                **base_log_data,
-                "time_taken": f"{round(end_time - start_time, 5)}s",
-                "status": "fail",
-                "statusCode": 500,
-                "diagnostics": f"Error in ack_processor_{func.__name__}: {str(e)}",
-            }
-            try:
-                logger.exception(f"Critical error in function: logging for {func.__name__}")
-                send_log_to_firehose(log_data)
-            except Exception:
-                logger.warning("Issue with logging")
+        except Exception as error:
+            additional_log_data = {"status": "fail", "statusCode": 500, "diagnostics": str(error)}
+            generate_and_send_logs(start_time, base_log_data, additional_log_data, is_error_log=True)
 
             raise
 
diff --git a/ack_backend/tests/test_ack_processor.py b/ack_backend/tests/test_ack_processor.py
index 96a572a6..de777d8f 100644
--- a/ack_backend/tests/test_ack_processor.py
+++ b/ack_backend/tests/test_ack_processor.py
@@ -144,7 +144,7 @@ def environment_setup(self, ack_file_name, existing_content):
 
         s3_client.put_object(Bucket=DESTINATION_BUCKET_NAME, Key=ack_file_name, Body=existing_content)
 
-    @patch("log_structure_splunk.send_log_to_firehose")
+    @patch("logging_decorators.send_log_to_firehose")
     def test_lambda_handler_main(self, mock_send_log_to_firehose):
         """Test lambda handler with dynamic ack_file_name and consistent row_template."""
         test_bucket_name = "immunisation-batch-internal-testlambda-data-destinations"
@@ -207,7 +207,7 @@ def test_lambda_handler_main(self, mock_send_log_to_firehose):
 
                     s3_client.delete_object(Bucket=test_bucket_name, Key=file_info["ack_file_name"])
 
-    @patch("log_structure_splunk.send_log_to_firehose")
+    @patch("logging_decorators.send_log_to_firehose")
     def test_lambda_handler_existing(self, mock_send_log_to_firehose):
         """Test lambda handler with dynamic ack_file_name and consistent row_template with an already existing
         ack file with content."""
@@ -472,7 +472,7 @@ def test_obtain_current_ack_content_file_exists(self):
 
             s3_client.delete_object(Bucket=DESTINATION_BUCKET_NAME, Key=ack_file_key)
 
-    @patch("log_structure_splunk.send_log_to_firehose")
+    @patch("logging_decorators.send_log_to_firehose")
     @patch("update_ack_file.create_ack_data")
     @patch("update_ack_file.update_ack_file")
     def test_lambda_handler_error_scenarios(
@@ -485,16 +485,14 @@ def test_lambda_handler_error_scenarios(
 
             mock_send_log_to_firehose.assert_called()
             error_log = mock_send_log_to_firehose.call_args[0][0]
-            self.assertIn(
-                "Error in ack_processor_lambda_handler: No records found in the event", error_log["diagnostics"]
-            )
+            self.assertIn("No records found in the event", error_log["diagnostics"])
             mock_send_log_to_firehose.reset_mock()
 
         test_cases = [
             {
                 "description": "Malformed JSON in SQS body",
                 "event": {"Records": [{""}]},
-                "expected_message": "Error in ack_processor_lambda_handler: Could not load incoming message body",
+                "expected_message": "Could not load incoming message body",
             },
             {
                 "description": "Invalid value in 'diagnostics' field",
@@ -516,7 +514,7 @@ def test_lambda_handler_error_scenarios(
                         }
                     ]
                 },
-                "expected_message": "Error in ack_processor_lambda_handler: Diagnostics must be either None or a string",
+                "expected_message": "Diagnostics must be either None or a string",
             },
         ]
         # TODO: What was below meant to be testing?
diff --git a/ack_backend/tests/test_splunk_logging.py b/ack_backend/tests/test_splunk_logging.py
index aef0b181..969315b5 100644
--- a/ack_backend/tests/test_splunk_logging.py
+++ b/ack_backend/tests/test_splunk_logging.py
@@ -34,9 +34,9 @@ def extract_log_json(self, log_entry):
     @patch("update_ack_file.obtain_current_ack_content")
     @patch("ack_processor.create_ack_data")
     @patch("ack_processor.update_ack_file")
-    @patch("log_structure_splunk.send_log_to_firehose")
+    @patch("logging_decorators.send_log_to_firehose")
     @patch("time.time")
-    @patch("log_structure_splunk.datetime")
+    @patch("logging_decorators.datetime")
     def test_splunk_logging_successful_rows(
         self,
         mock_datetime,
@@ -88,9 +88,9 @@ def test_splunk_logging_successful_rows(
     @patch("update_ack_file.obtain_current_ack_content")
     @patch("ack_processor.create_ack_data")
     @patch("ack_processor.update_ack_file")
-    @patch("log_structure_splunk.send_log_to_firehose")
+    @patch("logging_decorators.send_log_to_firehose")
     @patch("time.time")
-    @patch("log_structure_splunk.datetime")
+    @patch("logging_decorators.datetime")
     def test_splunk_logging_missing_data(
         self,
         mock_datetime,
@@ -133,9 +133,9 @@ def test_splunk_logging_missing_data(
     @patch("update_ack_file.obtain_current_ack_content")
     @patch("ack_processor.create_ack_data")
     @patch("ack_processor.update_ack_file")
-    @patch("log_structure_splunk.send_log_to_firehose")
+    @patch("logging_decorators.send_log_to_firehose")
     @patch("time.time")
-    @patch("log_structure_splunk.datetime")
+    @patch("logging_decorators.datetime")
     def test_splunk_logging_statuscode_diagnostics(
         self,
         mock_datetime,
@@ -194,9 +194,9 @@ def test_splunk_logging_statuscode_diagnostics(
     @patch("update_ack_file.obtain_current_ack_content")
     @patch("ack_processor.create_ack_data")
     @patch("ack_processor.update_ack_file")
-    @patch("log_structure_splunk.send_log_to_firehose")
+    @patch("logging_decorators.send_log_to_firehose")
     @patch("time.time")
-    @patch("log_structure_splunk.datetime")
+    @patch("logging_decorators.datetime")
     def test_splunk_logging_multiple_rows(
         self,
         mock_datetime,
@@ -242,9 +242,9 @@ def test_splunk_logging_multiple_rows(
     @patch("update_ack_file.obtain_current_ack_content")
     @patch("ack_processor.create_ack_data")
     @patch("ack_processor.update_ack_file")
-    @patch("log_structure_splunk.send_log_to_firehose")
+    @patch("logging_decorators.send_log_to_firehose")
     @patch("time.time")
-    @patch("log_structure_splunk.datetime")
+    @patch("logging_decorators.datetime")
     def test_splunk_logging_multiple_with_diagnostics(
         self,
         mock_datetime,