UK companies/SIC 09100/Shareholders/Page 29

Shareholders of UK companies in SIC 09100Page 29 of 30

Support activities for petroleum and natural gas extraction·3,467 companies carry this code·30 shown on this page

SIC 09100 — Support activities for petroleum and natural gas extraction is the Companies House industry code carried by 3,467 UK companies. This page sets out the shareholder register of 30 of them: 28 distinct shareholders holding 31 share-class positions. Every figure comes from the statement of capital and list of members in that company’s most recent CS01 confirmation statement, filed between 2021-06-17 and 2026-04-22. Each company and each shareholder carries a Sophymarine OpenRegistry ID.

Industry code
SIC 09100

On the UK register
3,467

With a shareholder register
883

Companies on this page
30

Distinct shareholders
28

Shareholders that are UK companies
8

INTERWELL LIMITED

openregistry-gb-SC391140·confirmation statement 2023-01-07·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
INTERWELL AS (995 927 470)openregistry-h-interwell-as-995-927-470-bceade	ORDINARY £0.01	100	100.00%

CANUK PETROLEUM ENGINEERING SERVICES LIMITED

openregistry-gb-SC406186·confirmation statement 2025-08-26·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
DAVID ANDREW WALKERopenregistry-h-david-andrew-walker-9b1961	ORDINARY	100	100.00%

OCEAN INSTALLER CREWING LIMITED

openregistry-gb-SC416119·confirmation statement 2023-02-14·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
OCEAN INSTALLER LIMITEDopenregistry-gb-SC416120	ORDINARY	1

TGT OILFIELD SERVICES UK LIMITED

openregistry-gb-SC427554·confirmation statement 2025-07-04·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
DIAGNOSTICA DMCCopenregistry-h-diagnostica-dmcc-34aa9d	ORDINARY	2,000,001

E M CABLE HOLDINGS LIMITED

openregistry-gb-SC429198·confirmation statement 2025-07-27·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
STEVEN THOMSONopenregistry-h-steven-thomson-13446c	ORDINARY	100	100.00%

SENTINEL OFFSHORE VESSELS LIMITED

openregistry-gb-SC447169·confirmation statement 2026-03-31·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
SENTINEL OFFSHORE HOLDINGS LIMITEDopenregistry-gb-SC447384	ORDINARY	54,011,670

NUCORE GROUP LTD.

openregistry-gb-SC450189·confirmation statement 2023-05-16·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
NUCORE GROUP HOLDINGS LIMITEDopenregistry-gb-SC699713	ORDINARY	1,573,100

N A PIPE & SURVEY SERVICES LTD

openregistry-gb-SC450193·confirmation statement 2023-05-22·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
NICHOLAS ANDREW ARCAROopenregistry-h-nicholas-andrew-arcaro-57bb62	ORDINARY	2	100.00%

OCEAN INSTALLER SURF UK LIMITED

openregistry-gb-SC452461·confirmation statement 2021-06-17·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
HAVFRAM II ASopenregistry-h-havfram-ii-as-2d6e82	ORDINARY	1

INVINCEUS LTD

openregistry-gb-SC459364·confirmation statement 2022-09-17·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
INVINCEUS GROUP LIMITEDopenregistry-gb-SC459290	ORDINARY	100

INVINCEUS INTERNATIONAL LTD

openregistry-gb-SC459398·confirmation statement 2022-09-17·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
INVINCEUS GROUP LIMITEDopenregistry-gb-SC459290	ORDINARY	100

SUBSEA 7 I-TECH LIMITED

openregistry-gb-SC463773·confirmation statement 2022-11-14·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
SUBSEA 7 LIMITEDopenregistry-gb-04316695	ORDINARY	1,102

SENTINEL OFFSHORE VESSELS 2 LIMITED

openregistry-gb-SC464549·confirmation statement 2023-12-02·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
SENTINEL OFFSHORE HOLDINGS LIMITEDopenregistry-gb-SC447384	ORDINARY	1

GRAEME FISHER LTD

openregistry-gb-SC467336·confirmation statement 2026-01-13·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
GRAEME FISHERopenregistry-gb-SC467336	ORD	1

OLLAR ENGINEERING LIMITED

openregistry-gb-SC474089·confirmation statement 2026-04-01·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
MRS LISA VICTORIA AKERSopenregistry-h-mrs-lisa-victoria-akers-9f68c7	ORDINARY	100

RP ELECTRICAL SOLUTIONS LIMITED

openregistry-gb-SC474753·confirmation statement 2023-04-07·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
SHARON DEVANEYopenregistry-h-sharon-devaney-f12601	ORDINARY	50
SHARON DEVANEYopenregistry-h-sharon-devaney-f12601	ORDINARY	50

KAREN AGNES DESIGN LIMITED

openregistry-gb-SC475766·confirmation statement 2026-04-22·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
GARRY RICHARD FOSTERopenregistry-h-garry-richard-foster-92009a	ORDINARY	100	100.00%

ALTUS INTERVENTION (ME) LIMITED

openregistry-gb-SC483831·confirmation statement 2023-08-07·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
ALTUS INTERVENTION (TECHNOLOGIES) ASopenregistry-h-altus-intervention-technologies-as-1cac86	ORDINARY	100

MAXWELL OIL TOOLS (NORTH SEA) LIMITED

openregistry-gb-SC486263·confirmation statement 2022-05-29·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
MAXWELL OIL TOOLS LTDopenregistry-gb-SC578783	ORDINARY	450,100	100.00%

G B SUBSEA LIMITED

openregistry-gb-SC486709·confirmation statement 2022-09-16·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
GRAEME ROBERT BUCHANopenregistry-h-graeme-robert-buchan-80a9a5	ORDINARY	2	100.00%

VORLICH MANAGEMENT LIMITED

openregistry-gb-SC495149·confirmation statement 2024-10-14·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
MR STUART HARRISONopenregistry-h-mr-stuart-harrison-9f7fe7	ORDINARY	1,000	100.00%

EVOLUTION HOSE LIMITED

openregistry-gb-SC503710·confirmation statement 2026-04-02·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
RIG SURVEYS GROUP LIMITEDopenregistry-gb-SC621428	ORDINARY	10

JVK ENGSERV LTD

openregistry-gb-SC524653·confirmation statement 2025-01-20·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
JOHN KIELYopenregistry-h-john-kiely-3c90b2	ORDINARY	100	100.00%

CLYDE PLANNING & PROJECT CONTROLS LTD

openregistry-gb-SC526682·confirmation statement 2025-02-11·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
MR IAN JAMES CLYDEopenregistry-h-mr-ian-james-clyde-857e62	ORDINARY	100

SURF CONTRACTORS LTD

openregistry-gb-SC539149·confirmation statement 2022-06-28·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
HARFRAM II ASopenregistry-h-harfram-ii-as-c555b0	ORDINARY	1	100.00%

PARRY'S PREMIUM SERVICES LTD

openregistry-gb-SC576888·confirmation statement 2025-09-20·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
GLYN ELLIS PARRYopenregistry-h-glyn-ellis-parry-c83092	ORDINARY	100	100.00%

WELLPATH LIMITED

openregistry-gb-SC577411·confirmation statement 2024-09-01·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
AKSHIN MEHDIYEVopenregistry-h-akshin-mehdiyev-f6ce28	ORDINARY	100	100.00%

NAIRN INSPECTION LTD

openregistry-gb-SC623219·confirmation statement 2021-11-09·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
JADE LOUISE JOHNSTONEopenregistry-h-jade-louise-johnstone-6d5ec6	ORDINARY A	100	100.00%

MORGAN JAMES BESPOKE LTD

openregistry-gb-SC624114·confirmation statement 2025-10-13·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
RUSSELL BRANDopenregistry-h-russell-brand-b798da	ORDINARY	1	100.00%

DARGAVEL CONTRACTS LTD

openregistry-gb-SC627255·confirmation statement 2024-04-10·1 shareholder·1 share class

Shareholder	Share class	Shares held	% of class
MR GARY CAMPBELLopenregistry-h-mr-gary-campbell-c84ca1	ORDINARY	1

Each shareholder carries a Sophymarine OpenRegistry ID. Where the shareholder resolves unambiguously to a UK registered company the ID is openregistry-gb- plus its Companies House number, so the same company carries the same ID wherever it appears. Every other shareholder, including individuals, is given openregistry-h- plus the name as filed and a short hash of it.

A name-derived ID keys the name as recorded on the confirmation statement, not a verified individual. Two different people filed under the same name share one ID; one person filed inconsistently across companies receives more than one.

“% of class” is the holding as a proportion of the shares allotted in that class, from the statement of capital in the same filing. It is blank where the filing states no allotment for the class.

Not every UK company has a machine-readable shareholder list. 883 of the 3,467 companies in SIC 09100 do; companies without one are not listed here.

Source: UK Companies House CS01 confirmation statements and the Free Company Data product, parsed by OpenRegistry. Figures are as filed on the date shown against each company and are not restated for later share transfers.