# THERMAWATT LTD (10926325)

> THERMAWATT LTD is an active private limited company (company number 10926325) incorporated on 22 August 2017, registered in Portsmouth. Its registered activity is electrical installation (SIC 43210). Latest small accounts cover the period ending 31 March 2026, showing net assets of £33k and cash of £5,818, with 2 employees on average. Net assets rose 3283200% on the prior period (£1).

- Status: Active
- Incorporated: 2017-08-22
- Registered office: Portsmouth, PO2 0TH
- SIC 43210: Electrical installation
- SIC 43220: Plumbing, heat and air-conditioning installation
- Next accounts due: 2027-12-31
- Confirmation statement due: 2027-09-05
- Accounts type: TOTAL EXEMPTION FULL

By net assets it sits in the top quarter of 597 comparable companies in Portsmouth (median £6,778, upper quartile £29k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2026-03-31 | £33k | £5,818 | £65k | — | — | — | 2 |
| 2025-03-31 | £1 | £1 | £0 | — | — | — | 0 |

size band micro.

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

- Net assets above zero: Net assets £32,833 at 31 March 2026
- Net assets up 10% or more on the prior period: +3283200.0% vs prior period
- Incorporated five or more years ago: Incorporated 22 August 2017

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

## Persons with significant control

- Mr Liam Lewis — owns 75–100% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2017-08-22

---
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/10926325
HTML: https://firmoscan.com/company/10926325-thermawatt-ltd