Top suppliers
Top suppliers to O F W A T
Top-five suppliers hold 41% of contract value — a concentrated market.
Procurement categories
What O F W A T buys
Common Procurement Vocabulary (CPV) breakdown of contracts awarded over the reporting period.
797172667365483230556370758090Recent contracts
Latest O F W A T contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
Stage 2 of the Review of the Credit and Collateral Arrangements for the Business Retail Market
Cubelynx Limited · 2026-09-09
£63K
Major Water Infrastructure Programme (MWIP) - Programmatic Delivery and Opportunity Assessment
Allora Infrastructure Limited · 2026-07-26
£100K
Technical support for Ford and Aylesford Water Recycling Project
AECOM Limited · 2026-07-13
£50K
Review of Ofwat's New Appointments and Variations (NAV) Financial Viability Assessment
Bramble Hub Limited · 2026-06-25
£77K
Technical support for DPC project Hampshire Water Transfer and Water Recycling project
AECOM Limited · 2026-06-25
£60K
Interim Senior Associate (Policy), for Major Projects (6-months)
Morgan Hunt UK Limited · 2026-06-23
£37K
Asset Health Metrics Pilot
AECOM LIMITED · 2026-05-21
£190K
International Supplier Market Engagement
Atkinsréalis UK limited · 2026-04-29
£35K
Major Projects System Analysis
Oliver Wyman Limited · 2026-03-29
£192K
Delivery Assessment Framework (DAF)
Ove Arup & Partners Limited · 2026-03-20
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In the enkii platform
What O F W A T has coming up
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Most of it is in business services, public utilities and architecture & engineering.
25
contracts ending in 12 months
Likely to be re-tendered: see which, and who holds them
Market analysis
Bidding into O F W A T — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
54%
Awards to SMEs
41%
Top-5 supplier share
65%
Framework call-offs
2
Awards to social enterprises
Around 54% of O F W A T’s classified awards go to small and medium-sized enterprises, and 2 have gone to voluntary, community or social enterprises. Around 65%of awards are call-offs from framework agreements — getting onto the right framework matters as much as the bid itself here.
Frequently asked
Common questions about selling to O F W A T
How much does O F W A T spend on procurement?
O F W A T awarded 165 contracts totalling £59.3M between 2023-11-08 and 2026-11-08, working with 107 unique suppliers. Average contract value is £368K.
Who are O F W A T's top suppliers?
The largest suppliers to O F W A T by total award value are NESTA, Deecon Consulting Ltd, Gi Group Recruitment Limited. The top five suppliers together hold 41% of contract value.
What does O F W A T buy from suppliers?
O F W A T's procurement is concentrated in business services: law, marketing, consulting, recruitment, printing and security, architectural, construction, engineering and inspection services, it services: consulting, software development, internet and support, alongside specialist categories. See the full CPV breakdown below.
How can my business bid for O F W A T contracts?
O F W A T 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.
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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 O F W A T'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 2026-11-08
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.