Top suppliers
Top suppliers to SECURITY INDUSTRY AUTHORITY
Top-five suppliers hold 98% of contract value — a concentrated market.
Procurement categories
What SECURITY INDUSTRY AUTHORITY buys
Common Procurement Vocabulary (CPV) breakdown of contracts awarded over the reporting period.
79620000
7962000079210000
7921000030130000
3013000079810000
7981000048210000
4821000055120000
5512000072220000
7222000079110000
7911000072260000
7226000064210000
6421000079990000
7999000079610000
7961000071310000
7131000072410000
7241000079310000
7931000085140000
8514000073110000
7311000072720000
7272000079340000
7934000048440000
48440000Recent contracts
Latest SECURITY INDUSTRY AUTHORITY contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
SIA 926 - Criminal Barristers Chambers 2026
HARCOURT CHAMBERS' SERVICES LIMITED · 2026-05-13
£155K
SIA 921 - Debt Recovery Services
BW Legal Services Limited · 2026-04-30
£10K
SIA 925 - Immutable Backup and Recovery
Phoenix Software Ltd · 2026-04-30
£15K
SIA 908 - Online Legal Research Resources 2025
Thomson Reuters (professional) UK Limited · 2026-04-30
£45K
SIA 924 - Interim Employment Law Advice
WILKIN CHAPMAN GROUP LTD · 2026-04-30
£65K
SIA 929 - Autopilot and Configuration Service
Phoenix Software Limited · 2026-04-30
£17K
SIA 939 - Microsoft Products and Licensing Contract 2026
Phoenix Software Limited · 2026-04-30
£6.8M
SIA 946 - Software Licensing Contract 2026
Phoenix Software Limited · 2026-04-30
£800K
SIA 913 - Confidential Storage and Destruction
Restore · 2026-04-30
£240K
Personal Protective Equipment
Arden Winch & Co · 2026-03-31
£47K
Information Sharing Service/Reporting Line
TREBLE 5 TREBLE 1 LIMITED · 2026-03-24
£46K
Events booking service
Calder Conferences · 2026-03-02
£400K
HR Shared Services Manager
300 North Consulting Ltd · 2026-01-14
£7K
Skills Research
Touchstone Partners Limited · 2026-01-14
£42K
HR Recruitment Business Partner MLR
300 North Consulting Ltd · 2026-01-14
£8K
Provision of Employee Expense Management System
Allocate Software Limited · 2026-01-07
£9K
Provision of employee benefits online platform
Reward Gateway (UK) Ltd · 2026-01-07
£26K
Provision of Interview Recording/Body Worn Video Devices
Radiocoms Systems Limited · 2025-12-10
£39K
Approved Contractor Scheme (ACS) Passport Scheme
Insight Certification Ltd T/A NSI · 2025-12-09
Approved Contractor Scheme
British Assessment Bureau Limited · 2025-10-31
£12.5M
BIDDING AGAINST THESE SUPPLIERS?
See your match score against SECURITY INDUSTRY AUTHORITY
ENKII scores your business against live tenders and identifies the certifications you need to compete with the suppliers above.
Open opportunities
Open SECURITY INDUSTRY AUTHORITY tenders
Tenders currently inviting bids. SMEs can respond via the official tender portal.
SIA 937 - Regulatory Legal Advice
SIA 937 - Regulatory Legal Advice
SIA 926 - Criminal Barrister's Chambers 2026
SIA 926 - Criminal Barrister's Chambers 2025
ACS Assessment Services
Approved Contractor Scheme (ACS) Passport Scheme
Approved Contractor Scheme (ACS) Passport Scheme
Approved Contractor Scheme (ACS) Passport Scheme
Licence Card Checking
SIA 807 - Employment Law Services 2024
SIA 840 - Legal Processing Services 2024-2026
SIA - Lone Worker Mobile Application
SIA - Criminal Prosecution Chambers
Pipeline
Contracts expiring in the next 12 months
When these contracts end, SECURITY INDUSTRY AUTHORITY typically re-tenders. SMEs preparing bids 3-6 months ahead win disproportionately often.
ALTIA Software
Expires: 2026-06-18
£49K
SIA 924 - Interim Employment Law Advice
Expires: 2026-08-10
£65K
Investigate Software
Expires: 2026-08-31
£42K
SIA 840 - Legal Processing Services 2024
Expires: 2026-10-12
£12K
Investigation and Case Management Software
Expires: 2026-10-16
£72K
SIA 929 - Autopilot and Configuration Service
Expires: 2026-10-30
£17K
Provision of Employee Expense Management System
Expires: 2026-11-18
£9K
SIA 925 - Immutable Backup and Recovery
Expires: 2027-01-29
£15K
SIA 906 - PSN & DNS Core Services 2025
Expires: 2027-01-31
£16K
WAVE Elearning Licences
Expires: 2027-02-13
£30K
Customer Satisfaction Research
Expires: 2027-03-31
£97K
SIA 920 - PSN Connectivity Gateway Service
Expires: 2027-06-11
£75K
SIA 920 - PSN Gateway Service
Expires: 2027-06-11
£113K
Market analysis
Bidding into SECURITY INDUSTRY AUTHORITY — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
98%
Top-5 supplier share
29d
Avg response window
31d
Median response window
26mo
Avg contract duration
Frequently asked
Common questions about selling to SECURITY INDUSTRY AUTHORITY
How much does SECURITY INDUSTRY AUTHORITY spend on procurement?
SECURITY INDUSTRY AUTHORITY awarded 56 contracts totalling £219.6M between 2023-06-17 and 2026-06-17, working with 50 unique suppliers. Average contract value is £4.0M.
Who are SECURITY INDUSTRY AUTHORITY's top suppliers?
The largest suppliers to SECURITY INDUSTRY AUTHORITY by total award value are ADECCO UK LIMITED, British Assessment Bureau Limited, POST OFFICE LTD. The top five suppliers together hold 98% of contract value.
What does SECURITY INDUSTRY AUTHORITY buy from suppliers?
SECURITY INDUSTRY AUTHORITY's procurement is concentrated in 79620000, 79210000, 30130000, alongside specialist categories. See the full CPV breakdown below.
How can my business bid for SECURITY INDUSTRY AUTHORITY contracts?
SECURITY INDUSTRY AUTHORITY publishes open tenders on Find a Tender and Contracts Finder. ENKII matches your business against live tenders, identifies certifications you'll need, and surfaces frameworks worth applying to. Free Readiness Score in 3 minutes.
What's the typical response window for SECURITY INDUSTRY AUTHORITY tenders?
SECURITY INDUSTRY AUTHORITY typically gives suppliers a median of 31 days to respond (average 29 days). Standard contract duration is around 26 months.
Continue reading
Related ENKII resources
GUIDE
PQQ & Selection Questionnaire — Procurement Act 2023
How UK central-government departments evaluate suppliers at the pre-qualification stage.
GUIDE
Cyber Essentials — for government contracts
Most central-government contracts handling personal data require this certification.
SECTOR
UK Government IT Services
G-Cloud, DOS, Crown Commercial frameworks. Software + consultancy is SECURITY INDUSTRY AUTHORITY's largest spend area.
INDEX
All UK public-sector buyers
Browse procurement profiles for every UK government department and major buyer.
Sources & methodology
How this profile is compiled
Analysed by ENKII · Updated 2026-06-17
This profile aggregates public-record procurement data published by the UK Government under the Open Government Licence v3.0. ENKII fetches, deduplicates, and aggregates source records; we don't edit the underlying facts.
Source portals
- · Find a Tender (find-tender.service.gov.uk)
- · Contracts Finder
- · Spend Network
Source records remain subject to Open Government Licence v3.0 attribution. ENKII doesn't warrant accuracy beyond the source portals' own publication.