Top suppliers
Top suppliers to O F W A T
Top-five suppliers hold 66% 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.
80520000
8052000079110000
7911000079410000
7941000079620000
7962000071310000
7131000071330000
7133000072220000
7222000079310000
7931000073110000
7311000079990000
7999000066170000
6617000072210000
7221000075240000
7524000079340000
7934000055120000
5512000048450000
4845000030230000
3023000072260000
7226000072410000
7241000090710000
90710000Recent contracts
Latest O F W A T contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
Asset Management Maturity Assessment (AMMA)
Ove Arup & Partners Limited · 2026-05-12
£139K
International Supplier Market Engagement
Atkinsréalis UK limited · 2026-05-06
£35K
CCTV System for the Birmingham OFWAT office
OCS GROUP UK LIMITED · 2026-04-28
£17K
Price Review Economics and Policy Support Consultancy Support
CEPA LLP · 2026-04-22
£1.5M
Travel Management System
Clarity Business Travel · 2026-04-15
£500K
LAN WLAN Maintenance
SCG Corporate · 2026-04-15
£17K
Citizen Space consultation and engagement platform
Delib Limited · 2026-04-15
£54K
Delivery Assessment Framework (DAF)
Ove Arup & Partners Limited · 2026-04-15
£96K
PROC.0226
Mott MacDonald Limited · 2026-04-15
£1.5M
Interim Associate (Programme Co-ordinator), Major Projects
Sanctuary Personnel Limited · 2026-03-10
£64K
Regovation Power BI Report Development
FSP CONSULTING SERVICES LIMITED · 2026-03-04
£75K
Streamlining RAPID and MP gated process - Technical review
WSP UK LTD · 2026-03-04
£35K
Interim Senior Associate (Corporate Finance), Major Projects (3)
Michael Page International Recruitment Limited · 2026-02-27
£48K
Asset Inventory
Turner & Townsend Infrastructure Ltd · 2026-02-24
£62K
Investor Relationship Engagement
Aquaicity Ltd · 2026-02-24
£130K
Inflation and the Cost of Debt
Steer Davies & Gleave Limited · 2026-02-13
£90K
Assurance Advisers for Major Projects
Bramble Hub Limited · 2026-02-09
£1.0M
Interim Senior Associate (Corporate Finance), Major Projects (2)
Michael Page International Recruitment Limited · 2026-02-09
£50K
Technical [Engineering] Advisers for Major Projects and Markets
WSP UK Limited · 2026-02-09
£2.0M
Financial Advisers for Major Projects
Deloitte LLP · 2026-02-09
£3.5M
BIDDING AGAINST THESE SUPPLIERS?
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Pipeline
Contracts expiring in the next 12 months
When these contracts end, O F W A T typically re-tenders. SMEs preparing bids 3-6 months ahead win disproportionately often.
Interim Senior Associate (Corporate Finance), Major Projects (2)
Expires: 2026-06-17
£50K
International Supplier Market Engagement
Expires: 2026-06-30
£35K
People Development Trainer
Expires: 2026-07-06
£103K
Interim Senior Associate (Corporate Finance), Major Projects (3)
Expires: 2026-07-07
£48K
Investor Relationship Engagement
Expires: 2026-07-24
£130K
Website Hosting and Maintenance
Expires: 2026-07-30
£125K
Data Platform Modernisation (Programme Ocean - Technology Workstream)
Expires: 2026-08-09
£650K
Multi-Functional Devices (MFDs), Print Management Software & Services Solution
Expires: 2026-10-23
£101K
Oracle Subscription Licences
Expires: 2026-10-28
£255K
Storage facilities and services
Expires: 2026-10-30
£97K
Service Desk and End User Compute Services
Expires: 2026-11-01
£563K
Water Customer Engagement Calls - enabling direct conversations between Ofwat leaders and water customers.
Expires: 2026-12-31
£24K
Chief Economist
Expires: 2026-12-31
£160K
Asset Management Maturity Assessment (AMMA)
Expires: 2027-01-29
£139K
External Security Incident and Event Management (SIEM) & Security Operations Centre (SOC) Support Monitoring Service
Expires: 2027-01-31
£95K
Social Listening and Audience Listening Tool
Expires: 2027-02-05
£84K
Mobile Voice and Data 2024
Expires: 2027-02-23
£34K
Recruiter Licences
Expires: 2027-02-28
£161K
Interim Associate (Programme Co-ordinator), Major Projects
Expires: 2027-03-08
£64K
Social Media Scheduling Tool
Expires: 2027-03-31
£34K
Ofwat Innovation Fund delivery partner 2025-30
Expires: 2027-03-31
£18.4M
Technical Advice on the development and delivery of reservoir projects under the licensed infrastructure provider model (SIPR)
Expires: 2027-03-31
£165K
Risk & Return Advice 2024 - 2027
Expires: 2027-03-31
£120K
Intelligent Email Security
Expires: 2027-03-31
£77K
Travel Management System
Expires: 2027-03-31
£500K
Financial Advisors - support for: the Hampshire Water Transfer (HWTWR) and Water Recycling scheme, and the Grand Union Canal scheme (GUC)
Expires: 2027-04-01
£160K
A Strategic Digital, Data and Infrastructure Delivery Partner
Expires: 2027-04-07
£1.4M
Market analysis
Bidding into O F W A T — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
66%
Top-5 supplier share
—
Avg response window
—
Median response window
11mo
Avg contract duration
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 138 contracts totalling £56.2M between 2023-06-17 and 2026-06-17, working with 106 unique suppliers. Average contract value is £407K.
Who are O F W A T's top suppliers?
The largest suppliers to O F W A T by total award value are ISLE UTILITIES LIMITED, Ashurst LLP, AQUA CONSULTANTS LIMITED. The top five suppliers together hold 66% of contract value.
What does O F W A T buy from suppliers?
O F W A T's procurement is concentrated in 80520000, 79110000, 79410000, 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.
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 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 2026-06-17
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.