Direct answer
The tender documents decide the number, age, value, scope and relevance of references required. A strong reference is not simply a friendly contact: it must match the published test and be verifiable. Confirm whether the buyer accepts contracts, framework places, subcontracted delivery, start-up evidence or reliance on another entity.
Map every reference to the printed condition
Record the required service, cohort, contract value or scale, delivery period, geography and contact details. A large but unrelated contract may be weaker than a smaller example that matches the specification exactly.
Make the evidence auditable
Agree the referee, contact details and permission before submission. Keep the contract or award evidence, dates, scope, outcomes and the bidder’s exact role. If the work was subcontracted, describe that accurately and check whether it satisfies the condition.
Do not confuse a reference with a case study
A reference verifies experience. A scored case study usually requires a structured explanation of challenge, action, controls and outcomes. One source may support both, but the response format and evaluation purpose are different.
