At a glance · for buyers and watchdogs
Quintessa Limited has won £6.6m across 14 public-sector buyers, with 4 live contracts. No active Companies House risk flags.
Why: top buyer International Nuclear Services Limited at 30% · 0 active risk flags · 0 modifications.
ESG & policies vault · 0/5
Key governance & sustainability policies. Published documents link out; missing ones are greyed.
Capabilities
What this supplier does, where they sit, who they sell to.
- Shaft Post-Grouting and Pre-Retrieval Hydrogeologic Conceptual Model Proposal
- UKCS Carbon Capture Risk Register and Global Lessons Learned
Extracted automatically from quintessa.org on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.
Case studies
Delivery stories the supplier has published, with sector and outcome.
No case studies yet
Once a claimed supplier publishes delivery stories — the buyer, the sector, what was delivered and the outcome — they appear here.
Buyer references
Named public-sector contacts who have agreed to act as a reference.
No buyer references yet
Public-sector buyers can confirm they'll act as a reference for this supplier. Confirmed references — with the contract they relate to — show here.
Accreditations & memberships · 1
Credentials listed on the supplier’s website. Not yet checked against issuer registers.
Extracted automatically from quintessa.org on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.
KPI performance
Delivery, budget and satisfaction scores reported quarterly by buyers.
No verified KPI scores yet
Once buyers report contract KPIs — delivery on time, on budget, satisfaction, adoption and accessibility — a weighted grade and breakdown appear here.
Contracts · 4 live · 39 historic
Pulled from Contracts Finder & Find a Tender. Most recent first.
| Title | Buyer | CPV | Awarded | Value | Term | Status |
|---|---|---|---|---|---|---|
| International Nuclear Services Limited | 90711500 | 16 Jun 2025 | £93k | 6 mo | Closed | |
| International Nuclear Services Limited | 90711500 | 09 May 2025 | £25k | 2 mo | Closed | |
| Nuclear Restoration Services Limited (Dounreay) | 90713000 | 10 Mar 2025 | £129k | 7 mo | Closed | |
| International Nuclear Services Limited | 71313000 | 01 Nov 2024 | £152k | 1.6 yrs | Closed | |
| NWS | 90700000 | 15 Jul 2024 | £57k | 2 mo | Closed | |
| nuclear waster services | 73000000 | 29 May 2024 | £575k | 3.8 yrs | Live | |
| International Nuclear Services Limited | 90700000 | 20 May 2024 | £960k | 2 yrs | Closed | |
| International Nuclear Services Limited | 80570000 | 01 Feb 2024 | £29k | 1.6 yrs | Closed | |
| International Nuclear Services Limited | 90711400 | 31 Jan 2024 | £32k | 4 mo | Closed | |
| International Nuclear Services Limited | 90711400 | 18 Jan 2024 | £165k | 2.3 yrs | Closed |
Top buyers · 14 buyers · top 3 = 75%
Share of awarded value. Concentration fires above 40% for any single buyer.
Geography
Distribution of awarded value by buyer region.
Peers
Suppliers with overlapping CPVs & buyers (last 24m). Quintessa Limited highlighted.
| Supplier | SME? | Awarded · 24m | Contracts |
|---|---|---|---|
| Yes | £19.9m | 1 | |
| No | £5.7m | 3 | |
| No | £3.3m | 3 | |
| Yes | £3.0m | 1 | |
| Yes | £2.7m | 1 | |
QU Quintessa Limited | No | — | — |
Red flags · 0 active
Automated scan of Companies House status, charges and insolvency records.
Compliance scorecard
Derived from Companies House filings — not a full supplier-assurance check.
Modifications
Variations to awarded contracts logged under Procurement Act 2023 s.74.
No modifications recorded
No published contract variations for this supplier. Modification notices appear here as they are issued under the Procurement Act 2023.
News mentions
UK trade press & nationals, matched to this supplier.
No news mentions found
We haven't matched any recent UK press coverage to this supplier. Mentions appear here automatically as they're published.
Companies House
Live sync — registered details, directors, PSC and SIC codes.
Registered details
- Company no.
- 03716623
- Status
- Active
- Type
- Private limited
- Incorporated
- 22 Feb 1999
- Reg. office
- The Hub, 14 Station Road, Henley-On-Thames, Oxfordshire, RG9 1AY
- SIC codes
- 62012 · 71122 · 72190 · 74901
- Last accounts
- 30 Apr 2025
- Next accounts due
- 31 Jan 2027
Directors & PSC
- TAYLOR, Amy Elizabeth — directorAppointed 01 May 2026
- BENBOW, Steven James, Dr — directorAppointed 01 May 2026
- WATSON, Claire Elaine, Dr — directorAppointed 01 May 2026
- NEWLING, Vicky Jane — directorAppointed 01 May 2026
- WALKE, Russell Charles — directorAppointed 01 May 2026
- TAYLOR, Amy — secretaryAppointed 02 May 2023
- Quintessa Trustee Limited — person with significant controlownership of shares 75 to 100 percent · voting rights 75 to 100 percent · right to appoint and remove directors
Financial
Filed accounts from Companies House.
No financial filings on record
Turnover, profit and headcount appear here once audited or micro-entity accounts are filed at Companies House.
Org tree
Group structure and ownership.
Independent. No parent company or subsidiaries recorded at Companies House for this entity.
Social value
Commitments mapped to the Government Social Value Model themes.
No social-value commitments yet
Jobs, skills, environmental, inequality and community commitments appear here once a claimed supplier attributes them to awarded contracts, or once we detect them on the supplier’s website.