Supplier · SME

calfordseaden LLP

calfordseaden LLP has won 36 UK public contracts worth £653m since 2 Nov 2020. See its competitors in architecture & engineering.

Company OC315838Companies House recordBased in LondonFirst contract 2 Nov 2020Latest contract 19 Aug 2026

Also published as Calford Seaden. These are the same company (OC315838), so their contracts are counted together.

Contracts
36
Published value
£653mwhere stated
Without competition
3%1 contracts
Won by SMEs
94%of 34 with size known
Contracts won per month, last 24 months 32 contracts · busiest month July 2025

Biggest customers

  1. Fusion21 Members Consortium 24 contracts · £426m
  2. South East Consortium 3 contracts · £210m
  3. Metropolitan Housing Trust 1 contract · £10m
  4. Network Homes 1 contract · £6m
  5. Harlow Council 1 contract · £525k
  6. Southern Housing 1 contract · £400k
  7. Tower Hamlets 1 contract · £177k
  8. Coventry City Council 1 contract · £123k
  9. London Borough of Enfield 1 contract · £45,500
  10. Swale Borough Council 1 contract · £45,420

What they supply

  1. Architecture & engineering 36 contracts · £653m

Competitors in architecture & engineering

Sector overview
  1. AECOM Ltd 73 contracts · £1.22bn
  2. WSP UK Limited 70 contracts · £346m
  3. Arcadis Consulting (UK) Limited 48 contracts · £355m
  4. Atkinsréalis UK Limited 47 contracts · £438m
  5. Ove Arup & Partners Limited 47 contracts · £293m
  6. Mott MacDonald Ltd 36 contracts · £338m

These are the suppliers with the most architecture & engineering contracts in the last two years, which is where calfordseaden LLP wins most of its work. They are not necessarily bidding for the same contracts. See the whole sector.

All contracts won by calfordseaden LLP

Contracts won by calfordseaden LLP
Date Contract Buyer Value
19 Aug 2026 Harlow Council £525k
18 Aug 2026 Southern Housing £400k
6 Jul 2026 Swale Borough Council £45,420
31 Mar 2026 The Riverside Group Limited —
24 Mar 2026 Tower Hamlets £177k
5 Nov 2025 Coventry City Council £123k
31 Oct 2025 Metropolitan Housing Trust £10m
25 Oct 2025 London Borough of Enfield £45,500
4 Jul 2025 Fusion21 Members Consortium £55m
4 Jul 2025 Fusion21 Members Consortium £5m
4 Jul 2025 Fusion21 Members Consortium £3m
4 Jul 2025 Fusion21 Members Consortium £8m
4 Jul 2025 Fusion21 Members Consortium £55m
4 Jul 2025 Fusion21 Members Consortium £5m
4 Jul 2025 Fusion21 Members Consortium £3m
4 Jul 2025 Fusion21 Members Consortium £8m
4 Jul 2025 Fusion21 Members Consortium £55m
4 Jul 2025 Fusion21 Members Consortium £5m
4 Jul 2025 Fusion21 Members Consortium £3m
4 Jul 2025 Fusion21 Members Consortium £8m
4 Jul 2025 Fusion21 Members Consortium £55m
4 Jul 2025 Fusion21 Members Consortium £5m
4 Jul 2025 Fusion21 Members Consortium £3m
4 Jul 2025 Fusion21 Members Consortium £8m
4 Jul 2025 Fusion21 Members Consortium £55m
4 Jul 2025 Fusion21 Members Consortium £5m
4 Jul 2025 Fusion21 Members Consortium £3m
4 Jul 2025 Fusion21 Members Consortium £8m
4 Jul 2025 Fusion21 Members Consortium £55m
4 Jul 2025 Fusion21 Members Consortium £5m
4 Jul 2025 Fusion21 Members Consortium £3m
4 Jul 2025 Fusion21 Members Consortium £8m
18 Jan 2021 South East Consortium £70m
18 Jan 2021 South East Consortium £70m
18 Jan 2021 South East Consortium £70m
2 Nov 2020 Network Homes £6m

Contracts are matched to this supplier by company name as published in each notice. If a company appears under slightly different names, some of its contracts may be listed separately. How matching works.