Supplier · Large organisation

Calfordseaden LLP

Calfordseaden LLP has won 75 UK public contracts worth £2.51bn 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 LLP. These are the same company (OC315838), so their contracts are counted together.

Contracts
75
Published value
£2.51bnwhere stated
Without competition
3%2 contracts
Won by SMEs
92%of 71 with size known
Contracts won per month, last 24 months 50 contracts · busiest month July 2025

Biggest customers

  1. Fusion21 Members Consortium 27 contracts · £1.42bn
  2. Central & Cecil Housing Trust 7 contracts · £665m
  3. Keystone Developments (LG) Limited 7 contracts · £7.82m
  4. Eastern Procurement Limited 5 contracts · £13.9m
  5. South East Consortium 4 contracts · £225m
  6. London Borough of Hillingdon 2 contracts · £40m
  7. Southern Housing 2 contracts · £687k
  8. London Borough of Havering 2 contracts · £676k

What they supply

  1. Architecture & engineering 70 contracts · £1.71bn
  2. Construction work 4 contracts · £800m
  3. IT services 1 contract · £308k

Competitors in architecture & engineering

Sector overview
  1. WSP UK Limited 207 contracts · £1.74bn
  2. Aecom Limited 190 contracts · £2.43bn
  3. Ridge and Partners LLP 184 contracts · £2.11bn
  4. Atkinsrealis UK Limited 157 contracts · £1.55bn
  5. Ove Arup & Partners Limited 131 contracts · £1.61bn
  6. Arcadis Consulting (UK) Ltd 119 contracts · £1.29bn

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 —
24 Mar 2026 Tower Hamlets £177k
5 Nov 2025 Coventry City Council £123k
31 Oct 2025 Metropolitan Housing Trust Limited £10m
25 Oct 2025 London Borough of Enfield £45,500
3 Sep 2025 Ashford Borough Council £308k
2 Sep 2025 Fusion21 Members Consortium £175m
7 Jul 2025 London Borough of Havering £265k
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
11 Jun 2025 London Borough of Havering £411k
10 Jun 2025 West Kent Housing Association £56,040
28 Apr 2025 Fusion21 Members Consortium £20m
15 Apr 2025 Fusion21 Members Consortium £800m
4 Apr 2025 Eastern Procurement Limited £1.93m
4 Apr 2025 Eastern Procurement Limited —
3 Apr 2025 Eastern Procurement Limited £7.71m
3 Apr 2025 Eastern Procurement Limited £964k
2 Apr 2025 Eastern Procurement Limited £3.28m
24 Feb 2025 L&Q Housing Trust £40m
17 Feb 2025 Southern Housing £287k
30 Jan 2025 Moat Homes Limited £97,276
27 Jan 2025 Communities and Housing Investment Consortium (CHIC) Limited £75m
27 Jan 2025 Communities and Housing Investment Consortium Limited —
10 Jan 2025 Westminster City Council £99,983

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.