# DIAG TEST LIMITED (08151678)

> DIAG TEST LIMITED is an active private limited company (company number 08151678) incorporated on 20 July 2012, registered in Durham. Its registered activity is repair and maintenance of other transport equipment n.e.c. (SIC 33170). Latest small accounts cover the period ending 31 July 2025, showing net assets of £112k and cash of £85k, with 7 employees on average. Net assets fell 83% on the prior period (£668k).

- Status: Active
- Incorporated: 2012-07-20
- Registered office: Durham, DH7 8PG
- SIC 33170: Repair and maintenance of other transport equipment n.e.c.
- Next accounts due: 2027-04-30
- Confirmation statement due: 2027-08-03
- Accounts type: TOTAL EXEMPTION FULL

By net assets it sits in the top quarter of 53 comparable companies in Newcastle (median £1,763, upper quartile £42k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-07-31 | £112k | £85k | £22k | — | — | — | 7 |
| 2024-07-31 | £668k | £657k | £39k | — | — | — | 5 |

size band micro.

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

- Net assets above zero: Net assets £111,853 at 31 July 2025
- Net assets down 25% or more on the prior period: -83.3% vs prior period
- Cash at bank of £50,000 or more: Cash £85,483
- Incorporated five or more years ago: Incorporated 20 July 2012

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

## Persons with significant control

- Mr Vincent Thompson — owns 50–75% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2016-04-06
- Dt Investments (North East) Limited (corporate-entity) — owns 25–50% of shares, since 2025-07-21

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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/08151678
HTML: https://firmoscan.com/company/08151678-diag-test-limited