Owner · Company

RSK Group Limited

RSK Group Limited is a company in the United Kingdom. It is a subsidiary of Alan Ryder Investments Limited. It has 7 subsidiaries in the data, linked to 6 assets and rights.

Group

Parent companies

From RSK Group Limited up to its ultimate parent in the data.

RSK Group Limited
Alan Ryder Investments Limited

Subsidiaries

7 companies under RSK Group Limited, direct and through other subsidiaries.

Subsidiary	Held through	Share	Assets and rights
RSK Environment Limited	Direct	—	—
CX Group Holdings Limited	RSK Environment Limited	—	—
HV Energy Systems Ltd	RSK Environment Limited	—	1
MWH UK Acquisitions Limited	RSK Environment Limited	—	—
Stephenson Halliday	RSK Environment Limited	—	1
Certus Utility Consulting Ltd	CX Group Holdings Limited	—	3
MWH Treatment Ltd	MWH UK Acquisitions Limited	—	1

Subsidiaries' portfolio

6 assets and rights across the subsidiaries, each counted once. This total is apart from the portfolio above.

Grid connections5
Power plant1

Facts

Fact	Value	Source
Location	England	Companies House bulk company data · record · OGL v3 · checked 24 Oct 2026
Location	United Kingdom	GLEIF LEI · record · CC0 1.0 · checked 24 Oct 2026
LEI	2138002YKOT1BRZ8NR62	Rare Context entity resolution · record · CC0 1.0 · checked 24 Oct 2026
LEI	2138002YKOT1BRZ8NR62	GLEIF LEI · record · CC0 1.0 · checked 24 Oct 2026
Company number	03761340	Companies House bulk company data · record · OGL v3 · checked 24 Oct 2026
Company number	03761340	GLEIF LEI · record · CC0 1.0 · checked 24 Oct 2026
Register status	Active	Companies House bulk company data · record · OGL v3 · checked 24 Oct 2026
Company type	Private Limited Company	Companies House bulk company data · record · OGL v3 · checked 24 Oct 2026
Incorporated	28 Apr 1999	Companies House bulk company data · record · OGL v3 · checked 24 Oct 2026
Industry (SIC)	70100 - Activities of head offices	Companies House bulk company data · record · OGL v3 · checked 24 Oct 2026

Also recorded as

Sources name RSK Group Limited under 2 records; this page joins them. Links to any of them lead here.

Name in the source	Identifier	Source
RSK GROUP LIMITED	party:company-number:gb-03761340	Companies House bulk company data
RSK GROUP LIMITED	party:lei:2138002YKOT1BRZ8NR62	GLEIF LEI

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Data on this page

Contains public sector information licensed under the Open Government Licence v3.0. Companies House bulk company data, OGL v3.
Companies House PSC snapshot. Companies House PSC snapshot, Free, unsupported daily snapshot.
GLEIF LEI. GLEIF LEI, CC0 1.0.
Rare Context entity resolution. Rare Context entity resolution, CC0 1.0.