# A1 HYDRO-STOP LIMITED (07521710)

> A1 HYDRO-STOP LIMITED is an active private limited company (company number 07521710) incorporated on 8 February 2011, registered in Middlesbrough. Its registered activity is other specialised construction activities n.e.c. (SIC 43999). Latest micro accounts cover the period ending 31 March 2026, showing net assets of £258, with 0 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 103% on the prior period (−£8,820). Across the last 3 periods on record the net-asset trend is volatile.

- Status: Active
- Incorporated: 2011-02-08
- Registered office: Middlesbrough, TS3 8NW
- SIC 43999: Other specialised construction activities n.e.c.
- Next accounts due: 2027-12-31
- Confirmation statement due: 2027-02-22
- Accounts type: MICRO ENTITY

By net assets it sits in the lower half of 373 comparable companies in Teesside (median £4,162, upper quartile £39k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2026-03-31 | £258 | — | — | £319 | — | — | 0 |
| 2025-03-31 | −£8,820 | — | — | £9,551 | — | — | 0 |
| 2024-03-31 | −£3,191 | — | — | £5,529 | — | — | 1 |

current ratio 1.81; net assets trend volatile; size band micro.

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

- Net assets above zero: Net assets £258 at 31 March 2026
- Net assets up 10% or more on the prior period: +102.9% vs prior period
- Current assets at least 1.5× creditors within one year: Current ratio 1.81
- Three or more accounting periods on record: 3 periods on record
- Incorporated five or more years ago: Incorporated 8 February 2011

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

## Persons with significant control

- Mr Mark Smith — owns 75–100% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2017-01-08

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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/07521710
HTML: https://firmoscan.com/company/07521710-a1-hydro-stop-limited