RFP QuestBeta

Brief your market

Who could bid the next time Security Industry Authority tenders for business services — from published contract awards, not directories. A tender that reaches more proven suppliers gets more bids; more bids is the evidence of value for money.

Business Services (29)Software & IT Systems (19)IT Services (14)Postal & Telecommunications (4)Research & Development (4)Radio, TV & Communications Equipment (4)Clothing & Footwear (3)Government & Public Administration (2)

Ring 1

Proven with you

Suppliers already holding a published Security Industry Authority award in this category.

Showing 10 of 24.

Ring 2

Proven with buyers like you

Suppliers who have won this category with other Other buyers — ranked by how many different buyers they've won with. This is the shortlist that widens your field.

  • deloitte LLP176 awards · 71 buyers · latest Jun 2026

    eDiscovery Review Platform

  • Kpmg Llp126 awards · 70 buyers · latest Jul 2026

    External Audit - AWARD

  • Pricewaterhousecoopers Llp115 awards · 63 buyers · latest Mar 2026

    Disability Landscape

  • Bdo Llp91 awards · 54 buyers · latest Jun 2026

    GB-London: Internal Audit Services

  • Hays Specialist Recruitment Limited308 awards · 43 buyers · latest Jul 2026

    CSP26110 - Management Accountant

  • Grant Thornton Uk Llp96 awards · 43 buyers · latest May 2026

    CA16896 - External Audit

  • Gatenbysanderson Limited61 awards · 41 buyers · latest Apr 2026

    Executive Search Fees

  • TLT LLP78 awards · 38 buyers · latest Jul 2026

    ICF Legal Services Contract Award Notice

  • PA Consulting Services Limited67 awards · 38 buyers · latest Apr 2026

    Supply Chain Consultancy Framework

  • Burges Salmon Llp66 awards · 38 buyers · latest Jun 2026

    PS26098 - Provision of external legal advice for the Account Management and High Potential Businesses workstreams

Showing 10 of 11,158.

Ring 3

Proven in the field

Suppliers winning this category anywhere in UK public procurement (excluding those already listed above).

  • Ernst & Young Llp187 awards · 105 buyers · latest May 2026

    Training Course for Future SEO

  • Bevan Brittan Llp172 awards · 90 buyers · latest May 2026

    Legal Services (Runoff Contracts)

  • Penna plc127 awards · 78 buyers · latest Mar 2026

    Connect2Framework For Legal Services

  • Pinsent Masons Llp130 awards · 73 buyers · latest Jul 2026

    Legal Assistance for Arbitration

  • Browne Jacobson Llp141 awards · 72 buyers · latest Jul 2026

    Lot 2 - Specialist Real Estate & Corporate

  • Mazars Llp104 awards · 71 buyers · latest Jan 2025

    1852 Provision of External Audit for NHS Birmingham and Solihull ICB

  • Linkedin Ireland Unlimited Company95 awards · 68 buyers · latest Jul 2026

    Job Posting & Recruiter License

  • Capsticks Solicitors LLP124 awards · 67 buyers · latest Jul 2026

    GB-London: RM6240 Call Off - ad hoc legal advice and support

  • Addleshaw Goddard Llp122 awards · 64 buyers · latest Jul 2026

    Legal Services

  • Dac Beachcroft Llp106 awards · 62 buyers · latest Jul 2026

    DHSC Sinogo claim legal support

Showing 10 of 25,049.

The full list — for members

All 11,158 Other suppliers in ring 2 (capped at 400, widest-proven first), copyable as a spreadsheet — so every proven supplier can hear about your next tender, not just the usual three.

Sources: published UK contract award notices in the rfp.quest corpus. “Proven” means a citable award — nothing here is inferred or scraped from directories. Award values are not summed because framework ceilings would inflate them.