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Company number
09147859

JAM TOPCO LIMITED

Active
✓ Active company on the official register. Next accounts due 31 December 2026.

Company details

South West, 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
JAM TOPCO LIMITED
Company number
09147859
Registered office
ATE HOUSE WESTPARK 26, CHELSTON, WELLINGTON, SOMERSET, TA21 9AD, UNITED KINGDOM · 42 other companies at this postcode
Company type
Private Limited Company
Incorporated on
25 July 2014
Status
Active
Age
12 years
Previous names
JAM BIDCO LIMITED (to 08 Aug 2014)
Nature of business (SIC)
26511 — Manufacture of electronic measuring, testing etc. equipment, not for industrial process control
Accounts — next due
31 Dec 2026
Accounts — last made up to
31 Mar 2025
Confirmation statement — next due
29 Jul 2027
Confirmation statement — last
15 Jul 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.

People with significant control

Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors

Halma Public Limited Company
owns 75–100% of shares · holds 75–100% of voting rights · can appoint and remove directors
Notified 30/04/2024
Mr Michael Paul Threlfall
owns 25–50% of shares · holds 25–50% of voting rights
Notified 06/04/2016
Synova Capital General Partner 4 Limited
owns 75–100% of shares · holds 75–100% of voting rights · can appoint and remove directors
Notified 06/04/2016

Corporate structure

Who controls this company, and who they control in turn

3 controllers Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Corporate owner owns 75–100% of shares · holds 75–100% of votes · can appoint and remove directors Notified 30/04/2024 Controls 75 companies
Mr Michael Paul Threlfall
born 06/1964 · United Kingdom owns 25–50% of shares · holds 25–50% of votes Control ended 22/12/2016 Controls 2 companies
Synova Capital General Partner 4 Limited name only
owns 75–100% of shares · holds 75–100% of votes · can appoint and remove directors Control ended 30/04/2024

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
30/04/2024 Person with significant control ceased Synova Capital General Partner 4 Limited
30/04/2024 Person with significant control added Halma Public Limited Company
22/12/2016 Person with significant control ceased Mr Michael Paul Threlfall
06/04/2016 Person with significant control added Synova Capital General Partner 4 Limited
06/04/2016 Person with significant control added Mr Michael Paul Threlfall
08/08/2014 Registered name changed JAM BIDCO LIMITED JAM TOPCO LIMITED

Documents for JAM TOPCO LIMITED

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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.

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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

Data protection register

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

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Get this company via API

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Frequently asked questions

What is the company number of JAM TOPCO LIMITED?
According to the official registry, the company number of JAM TOPCO LIMITED is 09147859.
Where is JAM TOPCO LIMITED registered?
The registered office is ATE HOUSE WESTPARK 26, CHELSTON, WELLINGTON, SOMERSET, TA21 9AD, UNITED KINGDOM.
What is the SIC code of JAM TOPCO LIMITED?
The nature of business is recorded under SIC code 26511 — Manufacture of electronic measuring, testing etc. equipment, not for industrial process control.
Who controls JAM TOPCO LIMITED?
Halma Public Limited Company is recorded as a person with significant control, and owns 75–100% of shares, holds 75–100% of voting rights, can appoint and remove directors.
When are the next accounts of JAM TOPCO LIMITED due?
The next annual accounts are due by 31 December 2026, and the last accounts were made up to 31 March 2025.

About JAM TOPCO LIMITED (09147859)

JAM TOPCO LIMITED is a private limited company incorporated on 25 July 2014 and registered in the United Kingdom under company number 09147859. Its registered office is at ATE HOUSE WESTPARK 26, CHELSTON, WELLINGTON, SOMERSET, TA21 9AD, UNITED KINGDOM. The recorded nature of business is manufacture of electronic measuring, testing etc. equipment, not for industrial process control (SIC 26511). The company is currently active , with statutory accounts last made up to 31 March 2025. , and the person with significant control is Halma Public Limited Company. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.

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