Top suppliers
Top suppliers to RSSB
Top-five suppliers hold 98% of contract value — a concentrated market.
Procurement categories
What RSSB buys
Common Procurement Vocabulary (CPV) breakdown of contracts awarded over the reporting period.
7348Recent contracts
Latest RSSB contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
GB-London: 882072869 T1358 Emissions testing of engines using diesel and hydrotreated vegetable oils and investigating in-service emissions monitors
Ricardo Rail Ltd, · 2024-11-03
£128K
GB-London: 881369422 T1330 Investigating enhanced use of Internet of Things sensors on rolling stock
University of Birmingham Enterprise Limited · 2024-10-07
£39K
846934010 T1331 Review of AC electric rolling stock power limitations
Navitas Engineering · 2024-10-06
£230K
790032088 Pre-Audit Verification and Support (RISQS)
Fortius VA Limited · 2024-07-14
£3.6M
GB-London: 844651393 T1332 Agreeing industry guidance for mobile electronic devices
Ove Arup and Partners · 2024-05-29
£60K
829233152 T1326 Enabling assisted braking and door operation on the GB Mainline
Ove Arup and Partners · 2024-03-05
£190K
GB-London: Defining Colour Vision Requirements for Train Drivers T1279
City, University of London · 2024-01-19
£37K
772165746 2021- MIS-002 Platform and Verification services - Qualification Management System
Altius VA Limited · 2023-12-15
£3.7M
GB-London: 807997561 T1280 Evaluating the effectiveness of control measures for unauthorised presence of 'mobile smart devices' within the drivers cab
Ove Arup and Partners · 2023-12-10
£60K
GB-Solilhull: 809291984 T1329 Assessing the requirements for Window Box Clearances
DGauge Ltd · 2023-11-10
£74K
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Open RSSB tenders
Tenders currently inviting bids. SMEs can respond via the official tender portal.
1063173918 T1421 Uniformity and consistency of braking within a freight train
Deadline: 2026-10-02
£350K
Market analysis
Bidding into RSSB — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
5%
Awards to SMEs
98%
Top-5 supplier share
0%
Framework call-offs
—
Awards to social enterprises
Around 5% of RSSB’s classified awards go to small and medium-sized enterprises.
Frequently asked
Common questions about selling to RSSB
How much does RSSB spend on procurement?
RSSB awarded 11 contracts totalling £8.2M between 2023-09-15 and 2026-09-15, working with 8 unique suppliers. Average contract value is £749K.
Who are RSSB's top suppliers?
The largest suppliers to RSSB by total award value are Altius VA Limited, Fortius VA Limited, Ove Arup and Partners. The top five suppliers together hold 98% of contract value.
What does RSSB buy from suppliers?
RSSB's procurement is concentrated in research and development services and related consultancy services, software package and information systems, alongside specialist categories. See the full CPV breakdown below.
How can my business bid for RSSB contracts?
RSSB 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.
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 RSSB'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 2026-09-15
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
Source records remain subject to Open Government Licence v3.0 attribution. ENKII doesn't warrant accuracy beyond the source portals' own publication.