RSK ENVIRONMENT LIMITED

UK registered

Companies House number SC115530·101 UK shareholdings·3 ownership layers

RSK ENVIRONMENT LIMITED is a UK-registered corporate shareholder (Companies House number SC115530) and holds shares in 101 active UK companies, recorded across 113 share-class positions on their Companies House confirmation statements (CS01). Beneath those direct holdings OpenRegistry resolves a further 28 companies spanning 3 ownership layers, of which 26 direct holdings are themselves holding companies; the persons-with-significant-control register independently agrees on 101 of these holdings. It ranks #11 of 54,210 corporate shareholders by number of active UK holdings. Programmatic access via MCP at https://openregistry.sophymarine.com/mcp.

Companies held
101

Share-class positions
113

Identity
UK company SC115530

Jurisdiction
UNITED KINGDOM

Ownership layers below
3

Holdings that are holding companies
26

PSC register agrees on
101 holdings

Company profile

Companies House profile of RSK ENVIRONMENT LIMITED

Shareholders

Shares held by RSK ENVIRONMENT LIMITED in 101 UK companies

Ownership chain

28 companies across 3 layers beneath RSK ENVIRONMENT LIMITED

Official record

Companies House record SC115530

Shareholdings

Every company RSK ENVIRONMENT LIMITED appears on as a member, as filed. 101 of 101 are linked to their Companies House profile.

Company held	Status	Accounts	Share class	Shares	% of class	% of capital	Total % of capital	As of
W.CROWDER & SONS LIMITED01069525	Active	FULL	ORDINARY	5,565	100.00%	100.00%	100.00%	2024-05-02
RICHARD ALLITT ASSOCIATES LIMITED03255404	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	1,290	100.00%	100.00%	100.00%	2023-09-28
CARBON ZERO CONSULTING LTD03320795	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	102	100.00%	100.00%	100.00%	2023-02-21
CS2 LIMITED03888977	Active	SMALL	ORDINARY	102,128	100.00%	100.00%	100.00%	2023-01-04
ELSYM INSTALLATIONS LIMITED04070943	Active	TOTAL EXEMPTION FULL	ORDINARY	100	100.00%	100.00%	100.00%	2025-09-08
GLOBAL RAIL CONSTRUCTION LIMITED ▼04272798	Active	FULL	ORDINARY	2	100.00%	100.00%	100.00%	2024-09-10
AURORA HEALTH PHYSICS SERVICES LIMITED04276316	Active	SMALL	ORDINARY	875	100.00%	100.00%	100.00%	2024-09-09
BTS GROUP LIMITED04299486	Active	FULL	ORDINARY	52,632	100.00%	100.00%	100.00%	2023-10-31
RSK INVESTMENTS LIMITED ▼04500781	Active	DORMANT	A ORDINARY	505,017	100.00%	100.00%	100.00%	2025-08-12
MG SCAFFOLDING (OXFORD) LIMITED04543435	Active	SMALL	ORDINARY	205	100.00%	100.00%	100.00%	2023-01-04
KENDALL KINGSCOTT LIMITED04605743	Active	FULL	ORDINARY	138,351	100.00%	100.00%	100.00%	2026-01-16
HYDROFIX LIMITED04713320	Active	SMALL	ORDINARY	108	100.00%	100.00%	100.00%	2023-07-04
BATEMAN SKIPS LTD ▼04934307	Active	FULL	ORDINARY	400	100.00%	100.00%	100.00%	2024-10-31
SALIX RIVER & WETLAND SERVICES LIMITED ▼04944506	Active	SMALL	ORDINARY	40,148	100.00%	100.00%	100.00%	2023-10-31
UP AND UNDER GROUP LIMITED ▼05435793	Active	SMALL	ORDINARY	200	100.00%	100.00%	100.00%	2023-04-26
MSS GROUP LIMITED ▼05486864	Active	GROUP	ORDINARY	307,695	100.00%	100.00%	100.00%	2023-06-22
MILESTONE COMMUNICATIONS LIMITED05542487	Active	FULL	ORDINARY	1,250	100.00%	100.00%	100.00%	2023-08-31
WYSE GROUP LIMITED ▼05665971	Active	DORMANT	ORDINARY	116,666	100.00%	100.00%	100.00%	2023-06-15
CENTRAL ALLIANCE PRE CONSTRUCTION SERVICES LTD05769713	Active	FULL	ORDINARY	4,000,340	100.00%	100.00%	100.00%	2025-02-19
GHI RENEWABLES LIMITED05942386	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	100	100.00%	100.00%	100.00%	2023-09-28
1ST INRAIL LIMITED06252002	Active	FULL	ORDINARY	75	100.00%	100.00%	100.00%	2024-06-03
EB7 LIMITED ▼06434420	Active	SMALL	ORDINARY	31,636,630	100.00%	100.00%	100.00%	2025-04-17
APOLLO STRATEGIC COMMUNICATIONS LIMITED06563797	Active	SMALL	ORDINARY	4	100.00%	100.00%	100.00%	2025-09-25
ENVIREAU LTD06647619	Active	SMALL	ORDINARY	85	100.00%	100.00%	100.00%	2022-07-15
RSK ACOUSTICS LIMITED07102436	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	13,052	100.00%	100.00%	100.00%	2022-12-22
COPELAND WEDGE ASSOCIATES LTD07709882	Active	DORMANT	ORDINARY	15,000	100.00%	100.00%	100.00%	2023-07-13
AXIS WELL TECHNOLOGY GROUP LIMITED ▼08430347	Active	FULL	ORDINARY	139,456,795	100.00%	100.00%	100.00%	2024-03-21
PD&MS HOLDINGS LIMITED08451993	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	1	100.00%	100.00%	100.00%	2026-04-09
FELLOWS CONSTRUCTION CONSULTANTS LTD08722651	Active	SMALL	ORDINARY	940	100.00%	100.00%	100.00%	2023-10-12
PROJECT IRES TOPCO LIMITED ▼09113299	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	7,107,723	100.00%	100.00%	100.00%	2024-07-02
EDP CONSULTANTS LTD09114212	Active	SMALL	ORDINARY	1,435	100.00%	100.00%	100.00%	2023-07-03
JB SITE INVESTIGATIONS LIMITED10057964	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	1	100.00%	100.00%	100.00%	2026-04-28
OPTISOL SERVICES LTD10212112	Active	SMALL	ORDINARY	200	100.00%	100.00%	100.00%	2023-01-17
BMG RESEARCH HOLDINGS LIMITED ▼10236510	Active	DORMANT	ORDINARY	1	100.00%	100.00%	100.00%	2025-03-28
RSK ADAS LIMITED10486936	Active	FULL	ORDINARY	4,000,100	100.00%	100.00%	100.00%	2024-12-06
WATER RESEARCH CENTRE LIMITED11172223	Active	FULL	ORDINARY	4,050,000	100.00%	100.00%	100.00%	2025-02-11
CALIBRATE GROUP LIMITED ▼12572433	Active	DORMANT	ORDINARY	20,513	100.00%	100.00%	100.00%	2024-01-16
ARGRENNAN ESTATE LIMITED13876305	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	4,500,100	100.00%	100.00%	100.00%	2025-02-24
CX GROUP HOLDINGS LIMITED ▼14655804	Active	DORMANT	ORDINARY	100,000	100.00%	100.00%	100.00%	2024-02-22
DWD PROPERTY AND PLANNING LIMITED15174312	Active	FULL	ORDINARY	3,000,100	100.00%	100.00%	100.00%	2024-10-01
AJ ENGINEERING & CONSTRUCTION SERVICES LIMITEDSC188199	Active	GROUP	ORDINARY	25,000	100.00%	100.00%	100.00%	2025-07-30
ELECTROKINETIC LIMITED04183422	Active	DORMANT	DEFERRED	8,617,547	100.00%	99.69%	100.00%	2024-04-04
ELECTROKINETIC LIMITED04183422	Active	DORMANT	ORDINARY	27,220	100.00%	0.31%	100.00%	2024-04-04
HV ENERGY SYSTEMS LTD10754572	Active	SMALL	ORDINARY	1,000	100.00%	96.99%	96.99%	2026-05-03
COPPER CONSULTANCY LIMITED03030759	Active	FULL	ORDINARY	9,469	84.62%	84.62%	84.62%	2023-03-08
RSKW LTD06548422	Active	DORMANT	ORDINARY	1,600	80.00%	80.00%	80.00%	2023-03-31
RSK LAND & DEVELOPMENT ENGINEERING LIMITED04723837	Active	AUDIT EXEMPTION SUBSIDIARY	A ORDINARY	66,881	80.04%	75.00%	75.00%	2024-06-06
ADVANTAGE RSK LIMITED13660383	Active	SMALL	A ORDINARY	600	100.00%	60.00%	60.00%	2022-10-03
DEANS HOLDCO LIMITED ▼SC783027	Active	FULL	ORDINARY	662,376	2.50%	2.50%	2.50%	2025-09-18
W.G.M (ENGINEERING)LIMITEDSC099834	Active	FULL	ORDINARY	0	0.00%	0.00%		2023-08-31
BROWN & MAY MARINE LIMITED01788594	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	4				2023-11-24
TBF SCAFFOLDING LTD01841098	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	200				2024-04-02
UP AND UNDER LIMITED02434409	Active	SMALL	ORDINARY	50,100				2024-05-30
BMG RESEARCH LTD02841970	Active	FULL	ORDINARY SHARES	216,756				2025-09-25
SPENCER QUANTUM LIMITED ▼02928764	Active	FULL	ORDINARY	500				2024-05-31
THE WOODHOUSE PARTNERSHIP LIMITED ▼02935938	Active	SMALL	ORDINARY	2,000				2023-07-24
ECONOMIC RESEARCH SERVICES LIMITED02937576	Active	SMALL	ORDINARY	3				2023-06-05
NON ENTRY SYSTEMS LIMITED03052061	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	95				2022-05-03
IAN FARMER ASSOCIATES (1998) LIMITED03661447	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	20,004				2024-11-06
RSK ORBITAL LIMITED ▼03686187	Active	SMALL	ORDINARY	1,075				2023-12-22
SINGLETON CLAMP & PARTNERS LIMITED03728935	Active	SMALL	ORDINARY	200				2024-03-28
FISHTEK LIMITED ▼03749571	Active	SMALL	ORDINARY	100				2023-01-10
C.R. CIVIL ENGINEERING LIMITED ▼03950591	Active	FULL	ORDINARY	5				2024-07-01
STEPHENSON HALLIDAY LIMITED04179680	Active	SMALL	G ORDINARY GBP1 SHARES	7				2022-02-01
			A ORDINARY GBP1 SHARES	55
			B ORDINARY GBP1 SHARES	17
			E ORDINARY GBP1 SHARES	7
			F ORDINARY GBP1 SHARES	7
			H ORDINARY GBP1 SHARES	7
CEETECH LIMITED04242024	Active	FULL	ORDINARY	27,059				2022-06-27
ENVIRESEARCH LIMITED04292592	Active	SMALL	ORDINARY	100				2021-04-05
RSK COUNTRYSIDE MANAGEMENT LIMITED04515676	Active	SMALL	ORDINARY	100				2022-08-22
TBF TRAFFIC LTD04689212	Active	SMALL	ORDINARY	100				2024-03-21
PHAROS FIELD ENGINEERING SERVICES LIMITED04869285	Active	SMALL	ORDINARY	100				2024-09-04
PROEON SYSTEMS LIMITED05112628	Active	SMALL	ORDINARY	100				2024-04-29
STREETWISE UK MANAGEMENT LIMITED05129606	Active	SMALL	ORDINARY	100				2022-05-17
TRAVIS BAKER LIMITED05703678	Active	SMALL	ORDINARY	2				2024-02-22
SOUTHERN ECOLOGICAL SOLUTIONS LIMITED ▼06192687	Active	FULL	A ORDINARY	10,000				2023-03-30
PA GROUP (UK) LIMITED06257126	Active	SMALL	ORDINARY	1				2021-05-21
WINDTECHS LTD06369650	Active	SMALL	ORDINARY	100				2025-10-22
WATERTRAIN LIMITED06401993	Active	SMALL	ORDINARY	203				2024-03-26
HOLLYWOOD CIVIL ENGINEERING LIMITED06726914	Active	SMALL	ORDINARY	100				2024-10-30
TREEFELLERS LIMITED06727099	Active	SMALL	ORDINARY	100				2023-05-10
CENTARA LTD07015837	Active	SMALL	ORDINARY	100				2024-09-23
ENVIROFLOW MANAGEMENT LIMITED07227667	Active	SMALL	ORDINARY	1,000				2022-04-07
TECHNIK GROUND SOLUTIONS LIMITED07874856	Active	SMALL	ORD	765				2021-12-09
SONIC DRILLING & PILING PLANTHIRE LIMITED07981593	Active	DORMANT	ORD	765				2022-03-08
3BM LIMITED08008506	Active	SMALL	ORDINARY	115,361				2025-04-17
PHAROS GENERATOR SERVICES LIMITED08334792	Active	SMALL	ORDINARY	100				2024-01-05
PROJECT MILNER LIMITED08534885	Active	DORMANT	ORDINARY GBP1 SHARES	100				2023-05-17
KIRTON WATER TREATMENT SERVICES LIMITED08612475	Active	SMALL	ORDINARY 1P	111				2023-08-11
WALDRAMS LIMITED08809725	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY SHARES	2				2021-12-13
PEGASYS LIMITED10333897	Active	SMALL	ORDINARY	100				2025-08-21
CRCE PLANT LIMITED10408804	Active	SMALL	ORDINARY	1				2024-10-23
HAWKINS ELECTRICAL HOLDINGS LIMITED10697268	Active	FULL	ORDINARY	100,000				2024-02-19
EIB GROUP LIMITED ▼11267170	Active	SMALL	C ORDINARY	2				2022-06-01
			E ORDINARY	2
			D ORDINARY	2
			F ORDINARY	2
			A ORDINARY	2
			B ORDINARY	2
FR CONSULTANTS LIMITED11354060	Active	FULL	ORDINARY	200				2023-03-20
RICHARD IRVIN FM LIMITED11454668	Active	FULL	A ORDINARY	80,000				2023-07-11
RICHARD IRVIN FM LIMITED11454668	Active	FULL	B ORDINARY	12,000				2023-07-11
ENVIRESEARCH TECHNOLOGIES LIMITED11541342	Active	SMALL	ORDINARY	100				2021-08-31
MWH UK ACQUISITIONS LIMITED11652932	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	20				2021-11-01
SUSTAINABLE AQUAFARMS LIMITED11791094	Active	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	298,981				2025-02-18
WE ARE BRANDNEW LTD14247042	Active - Proposal to Strike off	AUDIT EXEMPTION SUBSIDIARY	ORDINARY	0				2025-09-19
LARSEN WATER MANAGEMENT LTDNI024918	Active	SMALL	ORDINARY	29				2024-01-10
HOMER BURGESS LIMITEDSC055598	Active	SMALL	ORDINARY	101,767				2024-01-26
R.J.T. EXCAVATIONS LIMITEDSC118090	Active	FULL	ORDINARY	0				2025-12-11
RSK RENEWABLES LIMITEDSC328796	Active	FULL	ORDINARY	0				2023-07-12
HEADLAND ARCHAEOLOGY (UK) LIMITEDSC342945	Active	FULL	ORDINARY	0				2024-06-13

Ownership structure below these holdings

28 further companies sit beneath this entity’s direct holdings, across 3 layers. Each is linked to its Companies House profile.

GLOBAL RAIL CONSTRUCTION LIMITED04272798
- GRCL PROPERTY LTD13565920 ORDINARY
BATEMAN SKIPS LTD04934307
- AFFORDABLE SKIP HIRE BRISTOL LIMITED07687650 ORDINARY A · 100.00%
SALIX RIVER & WETLAND SERVICES LIMITED04944506
- TERRAFFIX SOIL SOLUTIONS LTD11795873 ORDINARY
MSS GROUP LIMITED05486864
- MSS WATER LIMITED04370657 ORDINARY
- MSS CONSULTING LIMITED05554672 ORDINARY
WYSE GROUP LIMITED05665971
- WYSEPOWER LIMITED05379085 ORDINARY
EB7 LIMITED06434420
- EB7 PARTY WALL LIMITED09526552 'A' ORDINARY / 'B' ORDINARY / 'C' ORDINARY / 'D' ORDINARY / 'E' ORDINARY
AXIS WELL TECHNOLOGY GROUP LIMITED08430347
- AXIS WELL TECHNOLOGY MANAGEMENT LIMITED08354912 ORDINARY · 100.00%
  - AXIS WELL TECHNOLOGY LIMITEDSC217030 ORDINARY · 0.00%
PROJECT IRES TOPCO LIMITED09113299
- PROJECT IRES BIDCO LIMITED09114938 ORDINARY · 100.00%
CALIBRATE GROUP LIMITED12572433
- MOUSEN LIMITED12650979 A ORDINARY / B ORDINARY
- GRIDFLEX LTD12553336 ORDINARY
- SDS INC LTD10561171 ORDINARY
CX GROUP HOLDINGS LIMITED14655804
- CX ENERGY LTD11626344 ORDINARY
- RSK UTILITY CONSULTING LIMITED11556909 ORDINARY
- CX UTILITIES LTD09620774 ORDINARY
DEANS HOLDCO LIMITEDSC783027
- DEANS CIVIL ENGINEERING LIMITEDSC378926 ORDINARY · 0.00%
  - DEANS DEVELOPMENTS (KILBARCHAN) LTDSC744357 ORDINARY
  - TARPAVE LIMITEDSC240089 ORDINARY 1 GBP
SPENCER QUANTUM LIMITED02928764
- QUANTUM GEOTECHNIC LIMITED11892518 ORDINARY
THE WOODHOUSE PARTNERSHIP LIMITED02935938
- DECISION SUPPORT TOOLS LIMITED05901006 ORDINARY · 100.00%
- ASSET WISDOM LIMITED08662804 ORDINARY · 25.35%
RSK ORBITAL LIMITED03686187
- SKYVISION INTERNATIONAL LIMITEDSC153156 ORDINARY A 1 GBP / ORDINARY B 1 GBP
FISHTEK LIMITED03749571
- HOOKPOD LIMITED08371208 ORDINARY
C.R. CIVIL ENGINEERING LIMITED03950591
- CHARNWOOD BUSINESS PARK MANAGEMENT COMPANY LIMITED04951097 ORDINARY · 7.89%
SOUTHERN ECOLOGICAL SOLUTIONS LIMITED06192687
- SES STRATEGIC LIMITED09231328 ORDINARY
EIB GROUP LIMITED11267170
- EIB PROFESSIONAL SERVICES LIMITED08103620 ORDINARY · 100.00%
- EIB GROWTH SERVICES LIMITED11246954 ORDINARY · 100.00%

Related company owners

Corporate shareholders that hold shares in the same UK companies as RSK ENVIRONMENT LIMITED:

ARES MANAGEMENT LIMITED05837428 5 shared holdings
CENTRAL ALLIANCE (HOLDINGS) LIMITED08887003 5 shared holdings
ELYSIAN CAPITAL GP (SCOTLAND) LIMITEDSC337589 3 shared holdings
RCAPITAL LIMITED06375700 2 shared holdings
RSK GROUP LIMITED03761340 1 shared holding
PROJECT IRES TOPCO LIMITED09113299 1 shared holding

Other corporate shareholders of comparable size registered in UNITED KINGDOM:

M. K. M. BUILDING SUPPLIES LIMITED03100815 111 UK holdings
MYDENTIST ACQUISITIONS LIMITED05657372 85 UK holdings
OCTOPUS TITAN VCT PLC06397765 86 UK holdings
KIDS PLANET DAY NURSERIES LIMITED06596787 105 UK holdings

Every company on this page is identified by its original Companies House registration number, shown beside its name and repeated in the data-company-number attribute of the same element. A shareholder that does not resolve to a registered company carries no number.

▼ marks a holding that itself holds shares in further companies, so ownership continues below it.

“% of capital” is the entity’s share of issued capital by nominal value, the correct basis when a company has multiple share classes.

Figures are as filed on each company’s most recent confirmation statement; the “As of” column gives that statement date. Source: Companies House Free Company Data and CS01 confirmation statements. Official record: find-and-update.company-information.service.gov.uk.