PT

PROTON THERAPY USA LIMITED

Active

Company number 07964052

London, England · Incorporated 24 February 2012

Flat 1 55 Portland Place, London, W1B 1QL, England

Last updated on 17 September 2026

Manufacture of irradiation, electromedical and electrotherapeutic equipment · SIC 26600

Status
Active
Company age
14 years
Company type
Private limited
Accounts
Up to date

Company overview

PROTON THERAPY USA LIMITED is an active private limited company incorporated on 24 February 2012 under the jurisdiction of England and Wales. The company is registered at Flat 1, 55 Portland Place, London W1B 1QL. Its principal activity is classified under SIC code 26600.

The company remains dormant, with its most recent accounts prepared to 30 June 2025 showing dormant status. The next accounts are due by 31 March 2027. A confirmation statement was filed on 15 April 2026 with no updates, and the next statement is due by 17 April 2027.

Jonathan Jay Sinclair serves as both company secretary and director, residing in the United States. Dr Michael Jeffrey Sinclair, a British-Israeli national resident in Israel, is the other director. The sole person with significant control is Emess Biosciences Limited, which holds 75-100% of the shares and voting rights.

There are no charges, no insolvency history, and the company has never been liquidated.

Compliance

Annual accounts Up to date
Last filed
30 June 2025
Next due
31 March 2027
7 months left
Confirmation statement Up to date
Last filed
3 April 2026
Next due
17 April 2027
7 months left

Financial snapshot

Last accounts type
Dormant
Period end
30 June 2025

Detailed figures (assets, liabilities, net worth) are available in the full credit report.

Officers

No officers on record.

Persons with significant control

PS
Emess Biosciences Limited
Ownership Of Shares 75 To 100 Percent
Voting Rights 75 To 100 Percent
6 April 2016

Funding

0 funding rounds

No funding rounds on record.

Filing history

Confirmation Statement With No Updates
Confirmation Statement
15 April 2026 View
Accounts With Accounts Type Dormant
Accounts
3 December 2025 View
Confirmation Statement With No Updates
Confirmation Statement
10 April 2025 View
Accounts With Accounts Type Total Exemption Full
Accounts
18 November 2024 View
Confirmation Statement With No Updates
Confirmation Statement
15 April 2024 View
Accounts With Accounts Type Total Exemption Full
Accounts
11 April 2024 View
Confirmation Statement With Updates
Confirmation Statement
3 April 2023 View
Confirmation Statement With No Updates
Confirmation Statement
13 March 2023 View
Change Registered Office Address Company With Date Old Address New Address
Address
2 December 2022 View
Accounts With Accounts Type Dormant
Accounts
9 August 2022 View
Confirmation Statement With No Updates
Confirmation Statement
1 March 2022 View
Accounts With Accounts Type Dormant
Accounts
14 February 2022 View
Accounts With Accounts Type Dormant
Accounts
30 March 2021 View
Confirmation Statement With No Updates
Confirmation Statement
26 February 2021 View
Accounts With Accounts Type Dormant
Accounts
13 March 2020 View
Confirmation Statement With No Updates
Confirmation Statement
4 March 2020 View
Accounts With Accounts Type Dormant
Accounts
27 March 2019 View
Confirmation Statement With No Updates
Confirmation Statement
14 March 2019 View
Change Person Secretary Company With Change Date
Officers
29 August 2018 View
Change Person Director Company With Change Date
Officers
29 August 2018 View
Change Person Director Company With Change Date
Officers
29 August 2018 View
Confirmation Statement With No Updates
Confirmation Statement
10 March 2018 View
Accounts With Accounts Type Dormant
Accounts
30 January 2018 View
Accounts With Accounts Type Dormant
Accounts
16 March 2017 View
Confirmation Statement With Updates
Confirmation Statement
6 March 2017 View
Accounts With Accounts Type Dormant
Accounts
17 March 2016 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
9 March 2016 View
Accounts With Accounts Type Dormant
Accounts
30 April 2015 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
19 March 2015 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
30 April 2014 View
Change Person Director Company With Change Date
Officers
30 April 2014 View
Change Person Secretary Company With Change Date
Officers
30 April 2014 View
Change Person Director Company With Change Date
Officers
30 April 2014 View
Accounts With Accounts Type Dormant
Accounts
14 January 2014 View
Annual Return Company With Made Up Date Full List Shareholders
Annual Return
13 March 2013 View
Change Account Reference Date Company Current Extended
Accounts
16 April 2012 View
Incorporation Company
Incorporation
24 February 2012 View

Risk at a glance

  • Company active
  • Accounts up to date
  • Confirmation statement up to date
  • No insolvency history
  • No registered charges
  • Credit score
  • Recommended limit
  • Payment risk

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  • Credit score & payment risk
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