# JAMES TANNER DIAGNOSTICS LIMITED (12698693)

> JAMES TANNER DIAGNOSTICS LIMITED is an active private limited company (company number 12698693) incorporated on 25 June 2020, registered in Cambridge. Its registered activity is specialists medical practice activities (SIC 86220). Latest micro accounts cover the period ending 31 March 2025, showing net assets of £25, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets fell 100% on the prior period (£6,800).

- Status: Active
- Incorporated: 2020-06-25
- Registered office: Cambridge, CB22 5EG
- SIC 86220: Specialists medical practice activities
- Next accounts due: 2026-12-31
- Confirmation statement due: 2027-07-09
- Accounts type: MICRO ENTITY

By net assets it sits in the bottom quarter of 175 comparable companies in Cambridge (median £32k, upper quartile £128k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-03-31 | £25 | — | — | £18k | — | — | 1 |
| 2024-03-31 | £6,800 | — | — | £21k | — | — | 1 |

current ratio 0.96; size band micro.

## Filing and accounts signals (facts, not a rating)

- Net assets above zero: Net assets £25 at 31 March 2025
- Net assets down 25% or more on the prior period: -99.6% vs prior period
- Current assets below creditors within one year: Current ratio 0.96
- Incorporated five or more years ago: Incorporated 25 June 2020

How each signal is derived: https://firmoscan.com/methodology

## Persons with significant control

- Mrs Gemma Victoria Tanner — owns 25–50% of shares; holds 25–50% of voting rights, since 2020-06-25
- Dr James Andrew Tanner — owns 25–50% of shares; holds 25–50% of voting rights, since 2020-06-25

---
Source: Companies House register snapshot 2026-08-31, Open Government Licence v3.0. Information may have changed since that date and is not advice or a credit reference; check the official record before relying on it. Official record: https://find-and-update.company-information.service.gov.uk/company/12698693
HTML: https://firmoscan.com/company/12698693-james-tanner-diagnostics-limited