OpenRegistry
UK companies/Company owner profile

LANSDOWNE DEVELOPED MARKETS MASTER FUND LIMITED

Foreign holder
CAYMAN ISLANDS·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 41 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

41 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 heldStatusAccountsShare classShares% of class% of capitalTotal % of capitalAs of
ZEKI RESEARCH LIMITEDopenregistry-gb-13672518ActiveTOTAL EXEMPTION FULLSEED 2 PREFERRED435,71375.66%24.39%30.44%2025-10-10
SEED 1 PREFERRED108,055100.00%6.05%
DISPLAYDATA LIMITEDopenregistry-gb-03929602ActiveGROUPX DEFERRED16,908,43123.00%9.06%17.51%2025-03-02
X PREFERRED8,063,61150.00%4.32%
F PREFERRED917,54817.10%2.46%
E PREFERRED624,58813.58%1.67%
GENOMICS LIMITEDopenregistry-gb-08839972ActiveGROUPSERIES C528,6689.94%2.79%7.80%2025-10-27
SERIES A475,67449.73%2.51%
SERIES B1258,36629.06%1.37%
SERIES B3214,0618.75%1.13%
TORTOISE MEDIA LTDopenregistry-gb-11100473ActiveTOTAL EXEMPTION FULLORDINARY397,9296.85%5.93%5.93%2025-11-29
UK TOTE GROUP LIMITEDopenregistry-gb-11119798ActiveGROUPA ORDINARY451,5143.10%2.69%2.69%2025-12-19
CAMBRIDGE INNOVATION CAPITAL LIMITED ▼openregistry-gb-08243718ActiveGROUPORDINARY SHARES2,401,5070.88%0.88%0.88%2025-09-30
NORTHERN GRITSTONE LIMITED ▼openregistry-gb-12982592ActiveGROUPORDINARY10,000,0003.57%0.56%0.56%2025-10-28
NATTERGAL LIMITED ▼openregistry-gb-13661114ActiveSMALLORDINARY2,1022024-10-04
PAPIER LTDopenregistry-gb-09534860ActiveGROUPORDINARY1,765,9712023-04-10
OSLER DIAGNOSTICS LIMITEDopenregistry-gb-10001467ActiveFULLSERIES B PREFERENCE28,6702026-02-10
SERIES C PREFERENCE10,154
OXFORD QUANTUM CIRCUITS LIMITEDopenregistry-gb-10803852ActiveGROUPSERIES A1393,0372025-06-04
SERIES A21,179,113
SERIES B1138,613
MOA TECHNOLOGY LIMITEDopenregistry-gb-10895764ActiveFULLSERIES B1145,7732025-08-01
OXFORD IONICS LIMITEDopenregistry-gb-11795789ActiveTOTAL EXEMPTION FULLORDINARY02026-01-28
RAINFOREST BUILDER LTDopenregistry-gb-14325196ActiveTOTAL EXEMPTION FULLORDINARY69,5652023-08-29
FREEVOLT GROUP LIMITED ▼openregistry-gb-11427539ActiveTOTAL EXEMPTION FULLORDINARY FV101,173,3232023-06-20

Ownership structure below these holdings

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

Related company owners

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

Other corporate shareholders of comparable size registered in CAYMAN ISLANDS:

▼ 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.