MARTLET CAPITAL LIMITED

UK registered

Companies House number 13363008·43 UK shareholdings·4 ownership layers

MARTLET CAPITAL LIMITED is a UK-registered corporate shareholder (Companies House number 13363008) and holds shares in 43 active UK companies, recorded across 63 share-class positions on their Companies House confirmation statements (CS01). Beneath those direct holdings OpenRegistry resolves a further 34 companies spanning 4 ownership layers, of which 3 direct holdings are themselves holding companies. It ranks #80 of 54,210 corporate shareholders by number of active UK holdings. Programmatic access via MCP at https://openregistry.sophymarine.com/mcp.

Companies held
43

Share-class positions
63

Identity
UK company 13363008

Jurisdiction
UNITED KINGDOM

Ownership layers below
4

Holdings that are holding companies
3

Company profile

Companies House profile of MARTLET CAPITAL LIMITED

Shareholders

Shares held by MARTLET CAPITAL LIMITED in 43 UK companies

Ownership chain

34 companies across 4 layers beneath MARTLET CAPITAL LIMITED

Official record

Companies House record 13363008

Shareholdings

Every company MARTLET CAPITAL LIMITED appears on as a member, as filed. 43 of 43 are linked to their Companies House profile.

Company held	Status	Accounts	Share class	Shares	% of class	% of capital	Total % of capital	As of
NUNABIO LIMITED08093593	Active	TOTAL EXEMPTION FULL	A ORDINARY	74,450	24.84%	10.50%	10.50%	2025-06-06
KALIUM HEALTH LTD11534901	Active	TOTAL EXEMPTION FULL	ORDINARY	22,005	7.18%	6.92%	6.92%	2025-07-17
PHARMENABLE THERAPEUTICS LIMITED10430444	Active	TOTAL EXEMPTION FULL	SERIES A	107,066	10.20%	3.30%	5.61%	2026-02-25
PHARMENABLE THERAPEUTICS LIMITED10430444	Active	TOTAL EXEMPTION FULL	ORDINARY	75,000	3.89%	2.31%	5.61%	2026-02-25
QKINE LIMITED10470662	Active	TOTAL EXEMPTION FULL	ORDINARY	229,096	5.44%	5.44%	5.44%	2026-06-01
DOGTOOTH TECHNOLOGIES LIMITED09079342	Active	TOTAL EXEMPTION FULL	ORDINARY	151,269	6.25%	4.10%	5.44%	2025-06-10
DOGTOOTH TECHNOLOGIES LIMITED09079342	Active	TOTAL EXEMPTION FULL	A ORDINARY	49,290	3.88%	1.34%	5.44%	2025-06-10
SPOTTA LIMITED11240610	Active	UNAUDITED ABRIDGED	ORDINARY	23,126	4.51%	2.64%	4.27%	2026-03-06
SPOTTA LIMITED11240610	Active	UNAUDITED ABRIDGED	PREFERENCE ORDINARY	14,273	3.93%	1.63%	4.27%	2026-03-06
RADIANT MATTER LTD12536048	Active	TOTAL EXEMPTION FULL	ORDINARY	8,291	4.75%	4.05%	4.05%	2026-04-12
ACCELERATOR ADVISORY LIMITED ▼12144298	Active	SMALL	ORDINARY	100,000	11.18%	4.02%	4.02%	2025-06-16
SEMARION LTD11534992	Active	TOTAL EXEMPTION FULL	ORDINARY	120,192		3.72%	3.72%	2025-08-28
AIVIVO LTD10694447	Active	TOTAL EXEMPTION FULL	ORDINARY	44,643	3.70%	3.70%	3.70%	2022-03-27
STROLLL LIMITED11832565	Active	TOTAL EXEMPTION FULL	ORDINARY C	101,010	39.37%	3.53%	3.53%	2026-02-17
ROBOK LIMITED10945246	Active	TOTAL EXEMPTION FULL	ORDINARY	80,151	3.92%	3.40%	3.40%	2025-03-27
ALLFOCAL OPTICS LIMITED14037511	Active	TOTAL EXEMPTION FULL	ORDINARY	135,135	3.08%	2.05%	3.25%	2025-04-09
ALLFOCAL OPTICS LIMITED14037511	Active	TOTAL EXEMPTION FULL	SEED PREFERRED SHARES	78,740	3.58%	1.20%	3.25%	2025-04-09
OCTAIPIPE LIMITED10489088	Active	TOTAL EXEMPTION FULL	SEED	8,049	8.41%	3.18%	3.18%	2025-12-22
NU QUANTUM LTD11568868	Active	TOTAL EXEMPTION FULL	SEED PREFERRED	61,339	6.18%	1.67%	3.14%	2025-09-13
			A ORDINARY	33,293	6.61%	0.91%
			ORDINARY	20,299	2.46%	0.55%
TRANSPARENTCHOICE LIMITED08423803	Active	TOTAL EXEMPTION FULL	ORDINARY	867	3.07%	3.07%	3.07%	2022-02-28
TRIPISM LIMITED08868704	Active	MICRO ENTITY	ORDINARY	4,185	2.65%	2.65%	2.65%	2022-10-24
NOBACZ HEALTHCARE LIMITED12365096	Active	MICRO ENTITY	A ORDINARY	34,530	13.89%	2.46%	2.46%	2025-11-23
NOBACZ HEALTHCARE LIMITED12365096	Active	MICRO ENTITY	ORDINARY	0	0.00%	0.00%	2.46%	2025-11-23
ECHION TECHNOLOGIES LTD10680704	Active	SMALL	ORDINARY	107,230	2.82%	2.07%	2.29%	2026-04-04
ECHION TECHNOLOGIES LTD10680704	Active	SMALL	SERIES B-1	11,452	1.28%	0.22%	2.29%	2026-04-04
TECHSPERT.IO LTD09874279	Active	GROUP	SERIES A PREFERRED	6,785	5.29%	1.00%	2.13%	2024-07-11
			SERIES B PREFERRED	5,027	2.45%	0.74%
			ORDINARY	2,695	0.82%	0.40%
MYRTLE SOFTWARE LIMITED04978210	Active	TOTAL EXEMPTION FULL	A ORDINARY	55,556	5.09%	1.25%	2.09%	2025-11-27
MYRTLE SOFTWARE LIMITED04978210	Active	TOTAL EXEMPTION FULL	A PREFERRED	37,383	6.70%	0.84%	2.09%	2025-11-27
EXONATE LIMITED08803638	Active	FULL	ORDINARY	1,437	1.86%	1.74%	1.74%	2025-12-05
PORO TECHNOLOGIES LTD11335936	Active	TOTAL EXEMPTION FULL	ORDINARY	5,714	3.02%	1.00%	1.55%	2025-11-07
PORO TECHNOLOGIES LTD11335936	Active	TOTAL EXEMPTION FULL	SEED PREFERRED	3,136	3.32%	0.55%	1.55%	2025-11-07
SIGNALOID LIMITED12028829	Active	TOTAL EXEMPTION FULL	A1	21,045	8.36%	1.31%	1.31%	2025-06-11
XAMPLA LTD11637116	Active	SMALL	ORDINARY	67,128	1.92%	0.44%	1.09%	2026-05-01
			SEED 3	41,430	7.09%	0.27%
			SERIES A2	30,605	1.11%	0.20%
			SEED	13,882	1.79%	0.09%
			SEED 2	10,358	1.61%	0.07%
			SERIES A1	1,555	0.02%	0.01%
PATIENTSOURCE LIMITED08143706	Active	TOTAL EXEMPTION FULL	ORDINARY	20,725	1.08%	1.08%	1.08%	2025-04-04
PARAGRAF LIMITED09889431	Active	GROUP	ORDINARY	62,914	1.26%	0.61%	0.84%	2026-04-10
PARAGRAF LIMITED09889431	Active	GROUP	PREFERRED 1	23,691	1.20%	0.23%	0.84%	2026-04-10
UNDO LIMITED05494036	Active	TOTAL EXEMPTION FULL	ORDINARY	6,618,765	0.43%	0.43%	0.43%	2025-11-20
PERVASID LIMITED07559981	Active	TOTAL EXEMPTION FULL	ORDINARY	817	0.75%	0.40%	0.40%	2026-03-10
CAMSTENT LIMITED05889060	Active	MICRO ENTITY	ORDINARY	1,600	0.10%	0.10%	0.10%	2025-07-27
CAMBRIDGE MECHATRONICS LIMITED03071231	Active	GROUP	ORDINARY	24,020	0.13%	0.05%	0.05%	2025-06-21
IESO DIGITAL HEALTH LIMITED04063351	Active	GROUP	NEW ORDINARY	2,550		0.03%	0.03%	2025-08-31
IESO DIGITAL HEALTH LIMITED04063351	Active	GROUP	ORDINARY	0		0.00%	0.03%	2025-08-31
PLUMIS LIMITED06748654	Active	TOTAL EXEMPTION FULL	ORDINARY	441,321				2025-01-22
ART DISCOVERY LIMITED07299752	Active	TOTAL EXEMPTION FULL	C PREFERENCE	0				2024-06-30
OXFORD SPACE SYSTEMS LIMITED08683577	Active	MEDIUM	ORDINARY	956,978				2025-09-10
OCTAGON I/O LTD09329199	Active	TOTAL EXEMPTION FULL	ORDINARY	78,662				2025-11-26
PSYOMICS LTD09470381	Active	SMALL	ORDINARY	5,220				2026-01-19
SYNDICATE ROOM GROUP LTD ▼10124624	Active	GROUP	ORDINARY	0				2025-01-15
CAMBRIDGE GAN DEVICES LIMITED10430656	Active	SMALL	A ORDINARY 0.0001 GBP	100,307				2025-10-17
CAMBRIDGE GAN DEVICES LIMITED10430656	Active	SMALL	ORDINARY 0.0001 GBP	56,000				2025-10-17
PLASTOMETREX LTD11620955	Active	TOTAL EXEMPTION FULL	ORDINARY	798				2025-10-11
PENCIL BIOSCIENCES LIMITED11660861	Active	SMALL	SEED	7,084				2026-05-24
INFINITOPES LIMITED13642685	Active	TOTAL EXEMPTION FULL	SEED	121,951				2024-09-23
CENSO BIOTECHNOLOGIES LTD ▼SC348293	Active	SMALL	ORDINARY	11,250				2025-09-09

Ownership structure below these holdings

34 further companies sit beneath this entity’s direct holdings, across 4 layers. Each is linked to its Companies House profile.

ACCELERATOR ADVISORY LIMITED12144298
- MICROLUB LIMITED15032046 ORDINARY · 2.83%
- PHOVIR TECHNOLOGIES LIMITED14756844 A ORDINARY · 2.25%
- OLO ROBOTICS LTD12516316 ORDINARY
SYNDICATE ROOM GROUP LTD10124624
- SYNDICATEROOM TWENTY8 NOMINEES (TT) LIMITED10230601 ORDINARY
  - PEKAMA LTD.09329544 ORDINARY · 8.65%
  - MBASO LTD07786534 ORDINARY · 0.86%
  - EMOQUO LIMITED07352321 ORDINARY · 0.27%
  - REVOLO BIOTHERAPEUTICS LIMITED07828414 ORDINARY · 0.21%
    - IR 2018 LIMITED04265329 A ORDINARY / ORDINARY / ORDINARY £1 SHARES
  - WARWICK ACOUSTICS LIMITED04451674 D ORDINARY · 0.05%
  - LEGALBEAGLES GROUP LTD09220332 ORDINARY
  - ART-I-CHECK LTD08186152 ORDINARY
  - DEM DX LIMITED09573122 ORDINARY
  - CAMBRIDGE NUTRACEUTICALS LIMITED07322398 A ORDINARY
  - RE-VANA THERAPEUTICS LTDNI638333 ORDINARY
  - METRION BIOSCIENCES LTD09669815 ORDINARY
- SYNDICATEROOM (TT) NOMINEES LTD09867749 ORDINARY
  - PEKAMA LTD.09329544 ORDINARY · 8.42%
  - AUTOLOGYX LTD07756576 ORDINARY · 4.55%
  - MUSIC EDUCATION TECHNOLOGIES LIMITED08615775 A ORDINARY · 1.48%
  - WARWICK ACOUSTICS LIMITED04451674 C ORDINARY · 0.90%
  - VAI MILANO UK LIMITED07930430 ORDINARY · 0.69%
  - RENOVARE FUELS LIMITED09812770 ORDINARY · 0.48%
    - PROJECT RF-1 LIMITED12642453 ORDINARY · 76.52%
  - UBIQUTEK LTD.08148525 ORDINARY SHARES · 0.26%
  - CIPHER SURGICAL LIMITEDSC378738 ORDINARY · 0.15%
  - WDTL CONSULTING TWO LIMITED07887779 ORDINARY · 0.00%
  - CAMFRIDGE LIMITED04750292 ORDINARY
  - DOCSAFE LIMITED08737547 ORDINARY
  - THOUGHTRIVER LIMITED10007469 ORDINARY
  - ADOREBOARD LIMITEDNI609044 ORDINARY
  - ZZISH LIMITED08378462 ORDINARY
  - ESSENTIA ANALYTICS LTD.07164254 A ORDINARY / B ORDINARY / ORDINARY
CENSO BIOTECHNOLOGIES LTDSC348293
- AXOL BIOSCIENCE LTD08340031 ORDINARY / ORDINARY A

Related company owners

Corporate shareholders that hold shares in the same UK companies as MARTLET CAPITAL LIMITED:

AMADEUS V TECHNOLOGY FUND LPLP019117 37 shared holdings
CAMBRIDGE ENTERPRISE LIMITED01069886 15 shared holdings
ANGEL COFUND07864831 14 shared holdings
IP2IPO PORTFOLIO L.P.LP017872 14 shared holdings
MOLTEN VENTURES VCT PLC03424984 12 shared holdings
BRITISH TECHNOLOGY INVESTMENTS LIMITED12204666 10 shared holdings

Other corporate shareholders of comparable size registered in UNITED KINGDOM:

PROVEN VCT PLC03911323 42 UK holdings
HILCO CAPITAL LIMITED03944915 42 UK holdings
BRITISH SMALLER COMPANIES VCT2 PLC04084003 42 UK holdings
SSG RECRUITMENT PARTNERSHIPS LTD04834923 43 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.