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Compliance Bulletins

Defence contractors must report information about their single-source defence contracts to the MOD and the Single Source Regulations Office (the SSRO). This is performed using the SSRO's Defence Contract Analysis and Reporting System (DefCARS). This information is a key element of the regulatory framework, providing the MOD with ongoing information throughout the contract period to support informed purchasing decisions and effective contract management for vital defence equipment and services. The SSRO publishes an annual Compliance Bulletin. The Compliance Bulletin examines how well defence contractors followed the reporting regulations for non-competitive (also known as single source) defence contracts. This page holds current and previous Compliance Bulletins, as well as the compliance and review methodology.

Published Friday 18 July 2025
Updated Tuesday 5 August 2025
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