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Company number
01435584

THALIA THERAPEUTICS PLC

Officer · HARBER, Ben and 40 others
Active
✓ Active company on the official register. Next accounts due 30 June 2027.

Company details

London, England Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Registered name
THALIA THERAPEUTICS PLC
Company number
01435584
Registered office
2 PORTMAN STREET, LONDON, W1H 6DU, UNITED KINGDOM · 443 other companies at this postcode
Company type
Public Limited Company
Incorporated on
6 July 1979
Status
Active
Age
47 years
Previous names
N4 PHARMA PLC (to 17 Mar 2026) · ONZIMA VENTURES PLC (to 17 Mar 2026) · ULTIMA NETWORKS PLC (to 17 Mar 2026)
Nature of business (SIC)
62090 — Other information technology service activities · 70100 — Activities of head offices
Accounts — next due
30 Jun 2027
Accounts — last made up to
31 Dec 2025
Confirmation statement — next due
13 May 2027
Confirmation statement — last
29 Apr 2026

What the register says

Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.

Companies House register snapshot, read 02/09/2026.

Officers

7 active · 34 resigned

secretary
Appointed 02/06/2025
Active
director
Appointed 20/05/2019
Active
director
Appointed 14/10/2015
Active
director
Appointed 09/09/2024
Active
director
Appointed 08/01/2025
Active
director
Appointed 24/02/2026
Active
director
Appointed 08/07/2025
Active

Corporate structure

Who controls this company, and who they control in turn

Connections

Serving officers

secretary Appointed 02/06/2025
director Appointed 20/05/2019
director Appointed 14/10/2015
director Appointed 09/09/2024
director Appointed 08/01/2025

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
17/03/2026 Registered name changed ULTIMA NETWORKS PLC ONZIMA VENTURES PLC
17/03/2026 Registered name changed ONZIMA VENTURES PLC N4 PHARMA PLC
17/03/2026 Registered name changed N4 PHARMA PLC THALIA THERAPEUTICS PLC
24/02/2026 Director resigned THEOBALD, Nigel James
24/02/2026 Director appointed SOLOMON, David Horn, Dr
08/07/2025 Director appointed WARDLE, Edward James Norman
02/06/2025 Corporate-secretary resigned SGH COMPANY SECRETARIES LIMITED
02/06/2025 Secretary appointed HARBER, Ben
08/01/2025 Director resigned TEMPLETON, David, Dr
08/01/2025 Director appointed SMITH, David Alastair Maclaughlin, Dr
09/09/2024 Director appointed PALFREYMAN, Michael Gavin, Dr
01/08/2023 Director resigned CHIPLIN, John
20/05/2019 Director resigned TITLEY, Paul Charlton
20/05/2019 Director appointed CHIPLIN, John
20/05/2019 Director appointed BRITTEN, Christopher Jonathan
19/02/2019 Corporate-secretary resigned LORRAINE YOUNG COMPANY SECRETARIES LIMITED
19/02/2019 Corporate-secretary appointed SGH COMPANY SECRETARIES LIMITED
03/05/2017 Director resigned MUGHAL, Humayun Akhter, Professor
03/05/2017 Director resigned BURNELL, Gavin John
03/05/2017 Director appointed TITLEY, Paul Charlton

Financial highlights

No figures could be read from the accounts filed on 09 Jul 2026. Companies House holds some filings only as a document image, which carries no tagged figures; the filing itself is on the register either way.

Documents for THALIA THERAPEUTICS PLC

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Company extract£1.99

The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.

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Financial statements£3.99

Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.

PDF + CSV Order
Ownership report£3.99

Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.

PDF Order

Filing history

Most recent filings

SH01 — capital-allotment-shares
capital
RESOLUTIONS — resolution
resolution
SH01 — capital-allotment-shares
capital
AA — accounts-with-accounts-type-group
accounts
CH01 — change-person-director-company-with-change-date
officers
CS01 — confirmation-statement-with-no-updates
confirmation-statement
CH01 — change-person-director-company-with-change-date
officers
AD01 — change-registered-office-address-company-with-date-old-address-new-address
address
CERTNM — certificate-change-of-name-company
change-of-name
AP01 — appoint-person-director-company-with-name-date
officers
TM01 — termination-director-company-with-name-termination-date
officers
AP01 — appoint-person-director-company-with-name-date
officers
RESOLUTIONS — resolution
resolution
AA — accounts-with-accounts-type-group
accounts
AP03 — appoint-person-secretary-company-with-name-date
officers
TM02 — termination-secretary-company-with-name-termination-date
officers
AD01 — change-registered-office-address-company-with-date-old-address-new-address
address
CS01 — confirmation-statement-with-no-updates
confirmation-statement
SH01 — capital-allotment-shares
capital
RESOLUTIONS — resolution
resolution
SH01 — capital-allotment-shares
capital
AP01 — appoint-person-director-company-with-name-date
officers
TM01 — termination-director-company-with-name-termination-date
officers
AP01 — appoint-person-director-company-with-name-date
officers
SH01 — capital-allotment-shares
capital

Charges

0 outstanding · 21 satisfied

Legal charge — persons entitled: National Westminster Bank PLC
fully-satisfied
Debenture — persons entitled: National Westminster Bank PLC
fully-satisfied
An omnibus guarantee and set-off agreement — persons entitled: Lloyds Tsb Bank PLC
fully-satisfied
Mortgage — persons entitled: Lloyds Tsb Bank PLC
fully-satisfied
Debenture deed — persons entitled: Lloyds Tsb Bank PLC
fully-satisfied
Mortgage — persons entitled: Lloyds Tsb Bank PLC
fully-satisfied
Deposit deed — persons entitled: Harvey Investments Limited
fully-satisfied
Debenture — persons entitled: Midland Bank PLC
fully-satisfied
Fixed equitable charge — persons entitled: Griffin Factors Limited
fully-satisfied
Legal charge — persons entitled: Midland Bank PLC
fully-satisfied
Fixed and floating charge — persons entitled: Midland Bank PLC
fully-satisfied
Assignment — persons entitled: Barclays Bank PLC
fully-satisfied
Legal charge — persons entitled: Barclays Bank PLC
fully-satisfied
Legal mortgage — persons entitled: National Westminster Bank PLC
fully-satisfied
Debenture — persons entitled: Barclays Bank PLC
fully-satisfied
Credit agreement — persons entitled: Close Brothers Limited
fully-satisfied
Mortgage debenture — persons entitled: National Westminster Bank PLC
fully-satisfied
Supplemental legal charge — persons entitled: Technical Development Capital Limited
fully-satisfied
Composite mortgage — persons entitled: Barclays Bank PLC
fully-satisfied
Letter of charge — persons entitled: Barclays Bank PLC
fully-satisfied
Mortgage debenture — persons entitled: National Westminster Bank PLC
fully-satisfied

Data protection register

No entry found on the ICO register of fee payers under this name.

Not every organisation has to register — some are exempt. An absent entry is a question to ask, not a finding.

Get this company via API

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Frequently asked questions

What is the company number of THALIA THERAPEUTICS PLC?
According to the official registry, the company number of THALIA THERAPEUTICS PLC is 01435584.
Where is THALIA THERAPEUTICS PLC registered?
The registered office is 2 PORTMAN STREET, LONDON, W1H 6DU, UNITED KINGDOM.
Who runs THALIA THERAPEUTICS PLC?
HARBER, Ben is listed among the officers of THALIA THERAPEUTICS PLC.
What is the SIC code of THALIA THERAPEUTICS PLC?
The nature of business is recorded under SIC code 62090 — Other information technology service activities, 70100 — Activities of head offices.
When are the next accounts of THALIA THERAPEUTICS PLC due?
The next annual accounts are due by 30 June 2027, and the last accounts were made up to 31 December 2025.

About THALIA THERAPEUTICS PLC (01435584)

THALIA THERAPEUTICS PLC is a public limited company incorporated on 6 July 1979 and registered in the United Kingdom under company number 01435584. Its registered office is at 2 PORTMAN STREET, LONDON, W1H 6DU, UNITED KINGDOM. The recorded nature of business is other information technology service activities (SIC 62090). The company is currently active , with statutory accounts last made up to 31 December 2025. 41 active officers are on record . This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 12 September 2026.

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