Supplier · SME

JT Mackley & Co Ltd

JT Mackley & Co Ltd has won 21 UK public contracts worth £61.2m since 28 Mar 2022. See its competitors in construction work.

Company 00258810Companies House record Based in South EastFirst contract 28 Mar 2022Latest contract 22 Oct 2026

Contracts: 21
Published value: £61.2mwhere stated
Without competition: 5%1 contracts
Won by SMEs: 14%of 7 with size known

Contracts won per month, last 24 months 15 contracts · busiest month May 2025

Dec 24
Mar 25
2
Jun 25
Sep 25
Dec 25
Mar 26
Jun 26
Sep 26

Biggest customers

Environment Agency 10 contracts · £8.98m
Portsmouth City Council 3 contracts · £19.4m
Defra 2 contracts · £152k
North Somerset Council 1 contract · £19.8m
Brighton & Hove City Council 1 contract · £12.5m
Defra group Commercial 1 contract · £300k
Department for Environment Food & Rural Affairs 1 contract · £69,909
Worthing Borough Council 1 contract · £24,770
Oxfordshire County Council 1 contract · £17,261

What they supply

Construction work 15 contracts · £60.6m
Architecture & engineering 4 contracts · £470k
Installation services 2 contracts · £122k

Competitors in construction work

Sector overview

Tarmac Trading Ltd 116 contracts · £699m
Thomas Bow Ltd SME 96 contracts · £244m
Bell Group Ltd 88 contracts · £5.47bn
Holcim UK Limited 83 contracts · £166m
Trust Utility Management Ltd SME 83 contracts · £34.2m
Esh Construction Ltd 63 contracts · £3.17bn

These are the suppliers with the most construction work contracts in the last two years, which is where JT Mackley & Co Ltd wins most of its work. They are not necessarily bidding for the same contracts. See the whole sector.

All contracts won by JT Mackley & Co Ltd

Contracts won by JT Mackley & Co Ltd
Date	Contract	Buyer	Value
22 Oct 2026	Contract Award Notice - Black Sluice Gearbox Replacement Construction	Department for Environment Food & Rural Affairs	£69,909
28 Jul 2026	KSL - Nav - East Farleigh Asset Refurbishment	Environment Agency	£5m
2 Jun 2026	KSL - SE - AOMR Lot 2 - Allington Tidal Works (Phased D&B)	Environment Agency	£136k
8 Apr 2026	Allington Sluice Drive System Replacement	Environment Agency	£1.98m
3 Mar 2026	MEAS Round Fields Managed Realignment Early Supplier Engagement	Defra	£93,050
9 Jan 2026	KSL - AOMR - Black Sluice Recondition Programme	Environment Agency	£122k
7 Jan 2026	SE - AOMR - Shirley Moore PS Pump Investigation	Environment Agency	£51,983
31 Oct 2025	Stabilisation Works at Redbridge HWRC, Oxford	Oxfordshire County Council	£17,261
16 Sep 2025	Birnbeck Pier Reinstatement works	North Somerset Council	£19.8m
25 Jun 2025	Allington Lock Building Refurbishment	Defra group Commercial	£300k
10 Jun 2025	Barnham Debris Screen Repairs	Environment Agency	£524k
20 May 2025	SE - AOMR Lot 2 - Shirley Moor Weed Rake	Environment Agency	£73,673
13 May 2025	SE - AOMR Lot 2 - Normans Bay Tidal Door	Environment Agency	£188k
30 Apr 2025	SE - AOMR - SE Recondition Programme Lot 2 Package	Environment Agency	£831k
14 Jan 2025	SSD - AOMR Lot 2 - Ferring Outfall Repairs	Environment Agency	£81,280
21 Oct 2024	Jury's Gap Tidal Basin Refurb - ECI	Defra	£59,231
2 Sep 2024	RS - Madeira Terraces Restoration Phase 1 - Main Contractor	Brighton & Hove City Council	£12.5m
26 Feb 2024	GB-Worthing: Worthing Coastal Protection - Timber Groyne Repair Works 2023/24	Worthing Borough Council	£24,770
15 Apr 2022	Extension to Coastal Engineering Minor Works Framework Agreement: Southern Coastal Group and SCOPAC (Southern England) No competition	Portsmouth City Council	£10.3m
15 Apr 2022	Coastal Engineering Minor Works Framework Agreement: Southern Coastal Group and SCOPAC (Southern England): Lot 1 - General Coastal Civil Engineering Works	Portsmouth City Council	£6.3m
28 Mar 2022	Coastal Engineering Minor Works Framework Agreement: Southern Coastal Group and SCOPAC (Southern England): Lot 2 - Specialist Beach Management Works	Portsmouth City Council	£2.7m

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.