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Company profile

Celsa Manufacturing (UK) Limited

UK company 04577881, incorporated on 30 October 2002.

Celsa Steel UK - reinforcement and steel long products manufacturing

Belonging to Celsa GroupTM, Celsa Steel UK is the largest producer of reinforcement in the United Kingdom and one of the largest manufacturers of other steel long products.

Company number
04577881
Incorporated
30 Oct 2002
Companies House status
Active

Company identity

Founded / incorporated
30 October 2002

Company number 04577881

Verify at Companies House
Legal name
7 STEEL MANUFACTURING (UK) LIMITED
Company type
Private Limited Company
Region
Wales
Registered address
BUILDING 58
EAST MOORS ROAD
CARDIFF
CF24 5NN
Insolvency history
No

Corporate ownership

Updated 07 Jul 2026 09:49

3 levels 1 ultimate controller
1
Company Active LTD
Celsa Manufacturing (UK) Limited
CRN 04577881
2
Direct controller Active LTD
3
Intermediate controller Active LTD
Sev.en Steel UK Ltd
CRN 16308046
4
Ultimate controller Active LTD
Sev.En Sigma Ltd
CRN 11910446

Company events

Reference milestones and recent Companies House filing stream events.

5 events
30 Sep
2027

Accounts due

Accounts Due

Next accounts due date

13 Nov
2026

Confirmation statement due

Confirmation Due

Next confirmation statement due date

31 Dec
2025

Accounts filed

Accounts

Last accounts made up date

30 Oct
2025

Confirmation statement filed

Confirmation

Last confirmation statement made up date

30 Oct
2002

Incorporated

Inception

Company registered at Companies House

Public funding

8 awards
First funded
2020
Funded years
2020, 2021, 2022
Age at first award
17 years

Projects

2022 Demonstrator

Cement 2 Zero

1 Sep 2022 to 31 Aug 2024

Awarded
£510,026
Total cost £2,040,102

In 2018, 7.3Mt of CO2 emissions were attributable to the UK concrete and cement sector; 4.4Mt of which were from clinker production. Researchers at the UoC have invented a new process of clinker production which has the potential to eliminate these emissions and enable the production of zero emission cement. The vision of Cement 2 Zero (C2Z) is to demonst...

2022 Demonstrator

Mevocrete: The Scale up of Material Evolution technology for net zero emission concrete

1 Sep 2022 to 31 Aug 2024

Awarded
£482,962
Total cost £1,931,847

Concrete's main carbon emitter is Ordinary Portland Cement (OPC) which equates to around 5% of the world's CO2 emissions. In 2019, production plants in Britain produced over 9million tonnes of cement, equating to over 700million tonnes of CO2 (Barcelo, 2020). There is a clear need to radically and radically decarbonise the foundation industries. This proj...

2021 Collaborative R&D

Re-imagining industrial by-products to create a circular approach in the steel and cement industries.

1 Oct 2021 to 31 Mar 2023

Awarded
£74,948
Total cost £149,897

Concrete is the second most used substance in the world after water, largely due to its low cost, abundance, and reliability in a wide variety of environments. While concrete has been a building block of society dating back to the ancient Egyptians, Greeks, and Romans, current production and utilization methods pose significant energy and emissions challe...

2021 Collaborative R&D Lead participant

Celsa Cardiff Steelworks Static VAR Compensator

1 Jun 2021 to 31 May 2023

Awarded
£3,000,000
Total cost £8,571,428

Celsa (Manufacturing) UK is the largest manufacturer of steel reinforcement in the UK as well as one of the largest manufacturers of other steel long products. There are 3 distinct processing areas at the site: the Melt Shop, where scrap steel is sorted, processed and melted into billets through the use of an electric arc furnace (EAF) -- a 33kV system th...

2021 Collaborative R&D

South Wales Industry - A Plan for Clean Growth

1 Feb 2021 to 31 Mar 2023

Awarded
£49,674
Total cost £99,349

The South Wales Industrial Cluster (SWIC) is a diverse mix of critical industry that have come together to collaboratively achieve common objectives for decarbonisation and clean growth delivering job security. The regions diverse industrial base presents both common and unique challenges. Sectors represented include steel/oil-refining/power/ paper/Nickel...

2020 Feasibility Studies Lead participant

Power Generation and Heat Recovery from Industrial Waste Heat with Advanced CO2 Thermodynamic Power Cycles (PowerCO2)

1 Dec 2020 to 31 Mar 2022

Awarded
£107,618
Total cost £215,236

Each year in the UK, approximately there are 48 TWh/yr industrial waste heat sources which is equivalent to one sixth of overall industrial energy use. Of this amount of industrial waste heat, technically 11TWh/yr (2.2 MtCO2/yr) could be potentially recovered for useful purposes such as Combined Heat and Power (CHP) through specially designed energy conve...

2020 Feasibility Studies

South Wales With Both Eyes Open: A Fast Start Project

1 Aug 2020 to 31 Jul 2021

Awarded
£14,052
Total cost £28,103

The proposed is a research and development project that aims to bring multiple stakeholders within the Foundation Industry South Wales Region together to analyze material and energy flows and identify potential opportunities for collaboration. Funding will support an industrial circular economy vision that will open new opportunities for improved energy a...

2020 Collaborative R&D

Roadmap - South Wales Industrial Cluster (SWIC) Phase 1

1 Apr 2020 to 31 Jul 2020

Awarded
£6,361
Total cost £12,722

The South Wales Industrial Cluster (SWIC) is a cluster of diverse industrial companies and sites across South Wales who have come together to collaboratively tackle common challenges of decarbonisation and clean growth. SWIC comprises of a diverse set of industries with both common and unique challenges. Sectors represented include steel, oil refining, pa...

Product types

Collaborative R&D Demonstrator Feasibility Studies