LANSDOWNE DEVELOPED MARKETS MASTER FUND LIMITED

Foreign holder

15 UK shareholdings·3 ownership layers

LANSDOWNE DEVELOPED MARKETS MASTER FUND LIMITED is a corporate shareholder registered in CAYMAN ISLANDS and holds shares in 15 active UK companies, recorded across 25 share-class positions on their Companies House confirmation statements (CS01). Beneath those direct holdings OpenRegistry resolves a further 37 companies spanning 3 ownership layers, of which 4 direct holdings are themselves holding companies; the persons-with-significant-control register independently agrees on 1 of these holdings. It ranks #688 of 54,210 corporate shareholders by number of active UK holdings. Programmatic access via MCP at https://openregistry.sophymarine.com/mcp.

Companies held
15

Share-class positions
25

Identity
CAYMAN ISLANDS entity

Jurisdiction
CAYMAN ISLANDS

Ownership layers below
3

Holdings that are holding companies
4

PSC register agrees on
1 holdings

Company profile

LANSDOWNE DEVELOPED MARKETS MASTER FUND LIMITED is a CAYMAN ISLANDS entity; OpenRegistry holds no UK register profile for it.

Shareholders

Shares held by LANSDOWNE DEVELOPED MARKETS MASTER FUND LIMITED in 15 UK companies

Ownership chain

37 companies across 3 layers beneath LANSDOWNE DEVELOPED MARKETS MASTER FUND LIMITED

Official record

Browse the UK register

Shareholdings

Every company LANSDOWNE DEVELOPED MARKETS MASTER FUND LIMITED appears on as a member, as filed. 15 of 15 are linked to their Companies House profile.

Company held	Status	Accounts	Share class	Shares	% of class	% of capital	Total % of capital	As of
ZEKI RESEARCH LIMITED13672518	Active	TOTAL EXEMPTION FULL	SEED 2 PREFERRED	435,713	75.66%	24.39%	30.44%	2025-10-10
ZEKI RESEARCH LIMITED13672518	Active	TOTAL EXEMPTION FULL	SEED 1 PREFERRED	108,055	100.00%	6.05%	30.44%	2025-10-10
DISPLAYDATA LIMITED03929602	Active	GROUP	X DEFERRED	16,908,431	23.00%	9.06%	17.51%	2025-03-02
			X PREFERRED	8,063,611	50.00%	4.32%
			F PREFERRED	917,548	17.10%	2.46%
			E PREFERRED	624,588	13.58%	1.67%
GENOMICS LIMITED08839972	Active	GROUP	SERIES C	528,668	9.94%	2.79%	7.80%	2025-10-27
			SERIES A	475,674	49.73%	2.51%
			SERIES B1	258,366	29.06%	1.37%
			SERIES B3	214,061	8.75%	1.13%
TORTOISE MEDIA LTD11100473	Active	TOTAL EXEMPTION FULL	ORDINARY	397,929	6.85%	5.93%	5.93%	2025-11-29
UK TOTE GROUP LIMITED11119798	Active	GROUP	A ORDINARY	451,514	3.10%	2.69%	2.69%	2025-12-19
CAMBRIDGE INNOVATION CAPITAL LIMITED ▼08243718	Active	GROUP	ORDINARY SHARES	2,401,507	0.88%	0.88%	0.88%	2025-09-30
NORTHERN GRITSTONE LIMITED ▼12982592	Active	GROUP	ORDINARY	10,000,000	3.57%	0.56%	0.56%	2025-10-28
PAPIER LTD09534860	Active	GROUP	ORDINARY	1,765,971				2023-04-10
OSLER DIAGNOSTICS LIMITED10001467	Active	FULL	SERIES C PREFERENCE	10,154				2026-02-10
OSLER DIAGNOSTICS LIMITED10001467	Active	FULL	SERIES B PREFERENCE	28,670				2026-02-10
OXFORD QUANTUM CIRCUITS LIMITED10803852	Active	GROUP	SERIES A2	1,179,113				2025-06-04
			SERIES A1	393,037
			SERIES B1	138,613
MOA TECHNOLOGY LIMITED10895764	Active	FULL	SERIES B1	145,773				2025-08-01
FREEVOLT GROUP LIMITED ▼11427539	Active	TOTAL EXEMPTION FULL	ORDINARY FV	101,173,323				2023-06-20
OXFORD IONICS LIMITED11795789	Active	TOTAL EXEMPTION FULL	ORDINARY	0				2026-01-28
NATTERGAL LIMITED ▼13661114	Active	SMALL	ORDINARY	2,102				2024-10-04
RAINFOREST BUILDER LTD14325196	Active	TOTAL EXEMPTION FULL	ORDINARY	69,565				2023-08-29

Ownership structure below these holdings

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

CAMBRIDGE INNOVATION CAPITAL LIMITED08243718
- ACCELERATOR ADVISORY LIMITED12144298 ORDINARY / SERIES SEED-1 SHARES · 16.07%
- CYTORA LIMITED08229538 ORDINARY · 3.31%
- START CODON LTD11680152 ORDINARY SHARES OF £0.0001 / SEED PREFERRED
- CICFOF LIMITED14802987 ORDINARY
- CAMBRIDGE INNOVATION CAPITAL MANAGER LIMITED12002307 ORDINARY
NORTHERN GRITSTONE LIMITED12982592
- MICROLUB LIMITED15032046 A ORDINARY / ORDINARY · 33.92%
- PHOVIR TECHNOLOGIES LIMITED14756844 A ORDINARY / ORDINARY · 28.84%
- LITERAL LABS LTD14746541 A ORDINARY · 24.75%
- SILVERRAY LTD11339711 A ORDINARY / ORDINARY · 24.20%
- CAVERO QUANTUM LIMITED13028884 A ORDINARY / ORDINARY · 23.72%
- OPTALYSYS LTD08575493 SERIES A · 22.53%
- APINI THERAPEUTICS LIMITED13767202 ORDINARY / SERIES A · 15.94%
- IMPERAGEN LIMITED13761050 A1 ORDINARY / ORDINARY · 12.29%
- CABLE COATINGS LIMITED10096075 SERIES SEED B PREFERENCE SHARES · 7.06%
- QV BIOELECTRONICS LTD.11608210 A ORDINARY · 5.22%
- EVOLUTOR LIMITED13882589 A ORDINARY · 1.37%
- OLO ROBOTICS LTD12516316 ORDINARY B
- PHAGENESIS LIMITED06308699 SERIES D1 ORDINARY
- C-CAPTURE LIMITED06912622 ORDINARY
- PRAGMATIC SEMICONDUCTOR LIMITED07423954 D ORDINARY
- FLOREON TECHNOLOGY LIMITED07850630 A ORDINARY
- RECOURSE AI LTD.11269312 ORDINARY
- PENCIL BIOSCIENCES LIMITED11660861 SEED
- SIMANALYTICA LIMITED11996161 C ORDINARY
- MIMETRIK SOLUTIONS LIMITED12456980 A ORDINARY
- OPTERAN TECHNOLOGIES LIMITED12494709 A2 SHARES / A3 SHARES
- PHLUX TECHNOLOGY LTD12908876 ORDINARY / SEED PREFERRED / SERIES A
- AUXETEC LIMITED12925662 A ORDINARY / ORDINARY
- ADSILICO LIMITED14263453 A ORDINARY / ORDINARY
- CRUCIBLE THERAPEUTICS LIMITED14690230 ORDINARY / SEED
- NORTHERN GRITSTONE INVESTMENT MANAGER LIMITED15186303 ORDINARY
- PIXEL-FLO LIMITED16387880 A ORDINARY / ORDINARY
- ICEOTOPE GROUP LIMITED08783357 SERIES B PREFERENCE / SERIES B1 PREFERENCE
  - ICEOTOPE TECHNOLOGIES LIMITED08004482 ORDINARY
FREEVOLT GROUP LIMITED11427539
- FREEVOLT TECHNOLOGIES LIMITED08618486 ORDINARY · 100.00%
NATTERGAL LIMITED13661114
- BIODIVERSITY EXCHANGE LIMITED14676759 ORDINARY · 2.80%
- JOE'S BLOOMS LTD13892230 ORDINARY · 0.76%

Related company owners

Corporate shareholders that hold shares in the same UK companies as LANSDOWNE DEVELOPED MARKETS MASTER FUND LIMITED:

OXFORD SCIENCE ENTERPRISES PLC09093331 33 shared holdings
IP2IPO PORTFOLIO (GP) LIMITED10360684 18 shared holdings
OXFORD SCIENCE ENTERPRISES HOLDINGS II LIMITED16279473 18 shared holdings
IP VENTURE FUND II (GP) LLPOC384792 16 shared holdings
QINETIQ HOLDINGS LIMITED04154556 8 shared holdings
ZEBRA DIAMOND HOLDINGS LIMITED08100061 8 shared holdings

Other corporate shareholders of comparable size registered in CAYMAN ISLANDS:

FULCRUM UTILITY INVESTMENTS LIMITEDFC030007 6 UK holdings
XTX INVESTMENTS LIMITEDFC035174 19 UK holdings
ARTHUR MIDCO LIMITEDFC041735 10 UK holdings
TAMAR CAPITAL LIMITED INC.OE016362 5 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.