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Clinical Diagnostic Services (London) Limited

04871120

active
ltd
england wales
Companies House
Health Score
90 / 100

Healthy

30/30
Filing
20/30
Financial
40/40
Risk

No risk factors detected.

Details

55 Loudoun Road, St John's Wood, London, NW8 0DL
Incorporated 19/08/2003

Previously known as

Clinical Diagnostics Services (London) Limited · until 12/08/2014
Clinical Diagnostics Educational Limited · until 07/08/2014

Compliance

Last accounts

31/07/2025

total exemption full

Next accounts due

30/04/2027

On track

Confirmation statement

Last: 19/08/2025

Due 02/09/2026

On track

Industry

85320
Technical and vocational secondary education

Officers

Mr William Ian Smith Obe

director · Since 19/08/2003

ULTRASONOGRAPHER

BRITISH · ENGLAND · Age 75

Also on 1 other board

Ruth Adele Carr

secretary · Since 19/08/2003

BRITISH · Age 77

Also on 4 other boards

William Ian Smith Obe

director · Since 19/08/2003

British · England · Age 75

Ruth Adele Carr

secretary · Since 19/08/2003

British

Former

London Law Secretarial Limited

corporate nominee secretary · Resigned 19/08/2003

London Law Services Limited

corporate nominee director · Resigned 19/08/2003

Benedict Smith

director · Resigned 07/11/2022

Persons with Significant Control

Mr William Ian Smith Obe

75–100% shares
75–100% votes
Appoint directors

British · United Kingdom · Age 75

55 Loudoun Road, London, NW8 0DL

Notified 06/04/2016

Change History

officer appointedCARR, Ruth Adele
2026-07-27
officer appointedSMITH OBE, William Ian
2026-07-27
statusactive
2026-07-27

Active

typeltd
2026-07-27

Private Limited Company

address line155 Loudoun Road
2026-07-27

55 LOUDOUN ROAD

post townLondon
2026-07-27

LONDON

CompanyRankvs 187+ SIC 85320 peers
83

Financial strength77th percentile among SIC peers · 19/25
Employees90th percentile among SIC peers · 14/15
LiquidityCurrent ratio 2.23× · 20/20
Longevity15 years trading (max 15) · 15/15
Filing complianceAll filings up to date · 15/15
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How is this score calculated?
Financial strength19/25 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.

Longevity15/15 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 31/07/2025

Net Worth

£34k

Balance sheet strength

Cash

£43k

Cash in the bank

Net Current Assets

£47k

Working capital

Current Assets

£86k

Current Liabilities

£38k

Fixed Assets

£5k

Debtors

£43k

7avg. employees+1

Tax at Year End(2023)

Corp tax£38k

Balance Sheet

Bank loans & overdrafts£18k
Assets less current liabilities£52k
Prepared with IRIS Accounts Production

EstimatesDerived

YearCurrent RatioImplied Profit
20252.23-£2k
20242.17-£18k
20231.52

Derived from filed accounts. Not audited figures.