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Guidance

How to guide: Calls for Evidence

Updated 4 August 2026

To ensure an effective call, in addition to considering the key principles set out in section 1, follow these steps:

Define the purpose and intended use

  • Set out why the call is being run.

  • Explain what decisions or next steps it will inform.

  • Set out how responses will be used, including whether and how they will be published.

Plan governance and information handling early

  • Decide how submissions will be received and stored, how personal data will be managed, and what may be shared across HMG or publicly.

  • Seek internal advice on security, legal, and data protection where relevant.

Ask focused, answerable questions

  • Keep questions proportionate to available time and analytical capability of the team managing the call.

  • Specify the types and formats of evidence sought (e.g. data, case studies, evaluations, literature, practical experience), and what constitutes useful evidence.

  • Test questions and introductory text with experts and knowledge mobilisers before finalising.

Analyse and synthesise transparently

  • Use clear approaches for triage, assessment, and synthesis of inputs - including conflicting evidence.

  • Record key themes, limitations and levels of confidence, so outputs are usable and auditable.

Acknowledge contributions and cite evidence

  • Respondents should be thanked for their submission by email receipt.  Include expected next steps in the text (for example, all submissions will be considered, a small number will be contacted for further engagement).

  • Contributors should be listed in an annex to any published reports whenever possible.

  • Where submissions inform reports, briefings or published outputs, reference sources to acknowledge contributions and support transparency and credibility.

Close the loop

  • Where possible, provide feedback and communicate what was learned and what will happen next.

  • Maintain accessible records to support future work and reduce repeat requests.

You can read technical details of how to publish Calls for Evidence on GOV.UK.