Brief your market

Who could bid the next time Security Industry Authority tenders for postal & telecommunications — 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 (26)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.

POST OFFICE LTD1 award · latest Aug 2024
Front Office Counter Services
SOUTHERN COMMUNICATIONS CORPORATE SOLUTIONS LIMITED1 award · latest Jul 2024
SIA 825 - Mobile Telephony & Data Contract 2024
Post Office1 award · latest Jun 2023
Post Office Counter Services (Extension)
POST OFFICE LIMITED1 award · latest May 2021
Post Office Ltd (Front Office Counter Services)

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.

Vodafone Limited17 awards · 12 buyers · latest Jun 2026
GB-Liverpool: Mobile Voice and Data Services
Citysprint (Uk) Limited12 awards · 10 buyers · latest Mar 2026
Direct Award - Provision of Same Day Courier Services
Virgin Media Business Limited10 awards · 9 buyers · latest Jul 2026
O2 Mobile Sims
DX Network Services Limited8 awards · 8 buyers · latest Apr 2024
Provision of Legalisation Office International and Domestic courier services
Vodafone ltd11 awards · 7 buyers · latest Jun 2026
Mobile voice and data services
CitySprint (UK) Ltd11 awards · 6 buyers · latest Jan 2024
Provision of Collection and Delivery of Documents and Parcels
Topspeed Couriers Limited10 awards · 6 buyers · latest Jan 2026
APHA Domestic Specialist Courier Service for 2026 (Direct Award)
Royal Mail Group Limited8 awards · 6 buyers · latest Nov 2024
Royal Mail Consolidated Payment
Whistl UK Limited6 awards · 6 buyers · latest Jul 2026
International Mail Service
PageOne Communications Limited6 awards · 6 buyers · latest Feb 2026
PI1301815 - SMS Text Messaging Service

Showing 10 of 417.

Ring 3

Proven in the field

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

British Telecommunications plc60 awards · 41 buyers · latest Jul 2026
GB-Rivenhall: ECFRS00410 Data Network Bundle
British Telecommunications Public Limited Company29 awards · 24 buyers · latest Apr 2026
Provision of Smart Messaging (SMS) Services
Royal Mail Group Ltd24 awards · 20 buyers · latest Jan 2026
AT1421 Royal Mail Postal Services
Royal Mail21 awards · 19 buyers · latest Dec 2025
First Class Postal Carrier
Telefonica UK Limited16 awards · 15 buyers · latest Mar 2025
Mobile Voice, Data and Hardware service (2)
Royal Mail Group14 awards · 14 buyers · latest May 2026
Corporate Postal Services - 1st Class Mail
BT plc20 awards · 13 buyers · latest Apr 2025
YAS Smart Messaging Service
Vodafone15 awards · 13 buyers · latest Jul 2026
GB-Sheffield: Mobile Voice and Data Services
Gamma Telecom Ltd12 awards · 11 buyers · latest Apr 2025
Mobile Voice and Data Services Short Bridging Contract
Whistl UK Ltd12 awards · 11 buyers · latest Jan 2025
Postal services Contract

Showing 10 of 975.

The full list — for members

All 417 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.