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The Single Source Regulations Office (SSRO) is an executive non-departmental public body, sponsored by the Ministry of Defence (MOD). SSRO is an executive non-departmental public body, sponsored by the Ministry of Defence .
The Defence Contract Analysis and Reporting System (DefCARS) allows contractors to meet the reporting requirements for contract and supplier reports.
This page details the SSRO's latest events
This page groups together the SSRO's consultations.
Statutory guidance to which the Ministry of Defence and its contractors must have regard when determining whether costs are allowable in qualifying defence contracts.
Members' Register of Interests (Does not include Membership of Professional Bodies)
2025/26 baseline profit rate, capital servicing rates and government owned contractor rate
The SSRO reports on departmental spending over £500 with a government procurement card (GPC) and departmental spending over £25,000.
The SSRO’s guidance on adjustments to the baseline profit rate is statutory guidance to which the Ministry of Defence and its contractors must have regard when determining the contract profit rate for qualifying defence cont…
This collection groups together all the documents relating to the Single Source Cost Standards: Statutory Guidance on Allowable Costs
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