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Protostar Group Limited

12704901

active
ltd
england wales
Companies House
Health Score
80 / 100

Healthy

30/30
Filing
10/30
Financial
40/40
Risk
  • Current liabilities exceed current assets (-10)

Details

Sustainable Workspaces, County Hall, 5th Floor The Riverside Building, Belvedere Road, London, SE1 7PB
Incorporated 29/06/2020

Compliance

Last accounts

31/12/2025

group

Next accounts due

30/09/2027

On track

Confirmation statement

Last: 09/03/2026

Due 23/03/2027

On track

Industry

72190
Other research and experimental development on natural sciences and engineering

Officers

Talal Mukhtar Mohamed Hasan

director · Since 29/06/2020

Omani · England · Age 44

Christina Karapataki

director · Since 31/01/2024

Cypriot · United States · Age 39

Karan Khimji

secretary · Since 01/07/2024

Joanna Alexandra Holt

director · Since 04/07/2024

British · United Kingdom · Age 49

Jeroen Eduard Van Der Hoek

director · Since 04/07/2024

Dutch · Norway · Age 52

Aurelie Marcelle Germaine Schwartzmann

director · Since 01/10/2025

French · France · Age 41

Former

Jade Leung

director · Resigned 26/09/2021

Christina Karapataki

director · Resigned 14/02/2022

Mark Hartney

director · Resigned 31/01/2024

Heinz Buhofer

director · Resigned 04/07/2024

Ghaouti Chehih

director · Resigned 04/07/2024

Max Altman

director · Resigned 04/07/2024

Greg Fleming

director · Resigned 01/10/2025

Persons with Significant Control

Mr Talal Hasan

25–50% shares

Omani · England · Age 44

Sustainable Workspaces, County Hall, 5th Floor, The Riverside Building, London, SE1 7PB

Notified 29/06/2020

Change History

officer appointedVAN DER HOEK, Jeroen Eduard
2026-06-09
officer appointedHASAN, Talal Mukhtar Mohamed
2026-06-09
officer appointedHOLT, Joanna Alexandra
2026-06-09
officer appointedKARAPATAKI, Christina
2026-06-09
officer appointedSCHWARTZMANN, Aurelie Marcelle Germaine
2026-06-09
officer appointedKHIMJI, Karan
2026-06-09
typeltd
2026-06-09

Private Limited Company

address line1Sustainable Workspaces, County Hall, 5th Floor The Riverside Building
2026-06-09

SUSTAINABLE WORKSPACES, COUNTY HALL, 5TH FLOOR THE RIVERSIDE BUILDING

post townLondon
2026-06-09

LONDON

statusactive
2026-06-09

Active

CompanyRankvs 643+ SIC 72190 peers
80

Financial strength100th percentile among SIC peers · 25/25
Employees93th percentile among SIC peers · 14/15
LiquidityCurrent ratio 55.95× · 20/20
Longevity6 years trading (max 15) · 6/15
Filing complianceAll filings up to date · 15/15
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How is this score calculated?
Financial strength25/25 pts

Net worth compared to all companies in the same SIC code with published accounts. Top quartile earns the full 25 points.

Employees14/15 pts

Workforce size relative to sector peers from the most recent accounts. A larger team generally signals commercial scale.

Liquidity20/20 pts

Current assets ÷ current liabilities. A ratio above 2× earns full marks; between 1–2× scores partially; below 0.5× scores minimal points.

Longevity6/15 pts

One point per year of operation since incorporation, capped at 15. Older companies have a proven track record.

Filing compliance15/15 pts

Full 15 points when both annual accounts and confirmation statement are filed on time. Points are deducted for each overdue filing.

Maximum score is 100. Deductions apply for insolvency history, outstanding charges, going concern doubt, or disqualified officers.

Key FinancialsYear ending 31/12/2024

Net Worth

£21.5M

Balance sheet strength

Cash

£13.2M

Cash in the bank

Net Current Assets

£21.3M

Working capital

Current Assets

£21.7M

Current Liabilities

£387k

Fixed Assets

£228k

Debtors

£8.5M

9avg. employees+2

Balance Sheet

Assets less current liabilities£21.5M
Prepared with Digita Accounts Production Advanced

EstimatesDerived

YearCurrent RatioImplied Profit
202455.95+£22.9M
20230.90-£4.4M
20220.71-£685k
2021375.90-£17k
2021201.61

Derived from filed accounts. Not audited figures.