SIT Regression

Systems Integration Testing (SIT) Regression
The objective of the Regression Testing stage is to ensure that previously passed tests, defects and software still perform as expected after changes have been made. The regression tests are performed to ensure that new code and defect fixes have not introduced new bugs or triggered any previously undiscovered defects that would cause software to regress unintentionally.
If you have any questions about SIT Regression, please email [email protected]
SIT Regression Framework and Regression Pack Consultation
On Monday 17 March 2025, the Programme published the Systems Integration Testing (SIT) Regression Framework and Regression Pack for industry consultation.
As part of this consultation, we're asking participants to please review the following documents and submit your feedback to [email protected] using the Comments Log below, by 17:00 on Friday 28 March 2025.
SIT Regression Framework & Regression Pack
SIT Functional & Migration Regression Test Analysis: 14 March 2025
SIT Regression Framework & Regression Pack Comments Log
Programme participants have been invited to the following sessions:
- SIT Regression Test Pack - Participant Walkthrough on Thursday 20 March 2025
- SIT Regression Test Pack - Q&A Drop-in session on Thursday 27 March 2025
If you have any questions, please email the Testing Team at [email protected]


Systems Integration Testing (SIT) Regression Testing Approach & Plan
The SIT Regression Testing Approach and Plan describes the associated objectives, scope, approach, schedule, management, governance, and assurance of the Regression Testing Test stage.
On Monday 27 January 2025, the Programme issued the SIT Regression Testing Approach and Plan for industry consultation.
This consultation closed on Friday 7 February 2025. Thank you to everyone who submitted a response.
The SIT Regression Testing Approach & Plan was approved at the Extraordinary Systems Integration Testing Advisory Group (eSITAG) meeting on Friday 28 February 2025. This document has been updated from v0.3 to v1.0.
You can view the uplifted document below, along with a Consolidated Comments Log from the consultation, for information:
SIT Regression Testing Approach & Plan v1.0
SIT Regression Testing Approach & Plan Consolidated Comments Log
If you have any questions, please email the Testing Team at [email protected]