- Companies
- Plumbers and heating engineers
- Walton on Thames
- Cromwell Engineering Limited
Cromwell Engineering Limited
- Company number
- 01165702
- Incorporated
- 4 Apr 197452 years trading
- Registered office
- 1B Cromwell Road, Walton on Thames, Surrey, KT12 3NL
- Nature of business
- Plumbing, heat and air-conditioning installation; Other construction installation
Cromwell Engineering Limited is a 52-year-old private limited company registered in Walton on Thames, company number 01165702, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £151K (+32%) on the year before, to £623K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £574K against £482K owed within a year: 1.2 times cover.
- 14 employees on average, down from 15 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £623K | £36K | £574K | £482K | 14 |
| 31 Mar 2024 | £472K | £97K | £617K | £454K | 15 |
| 31 Mar 2023 | £426K | £473K | £757K | £638K | 12 |
| 31 Mar 2022 | £423K | £25K | £426K | £295K | 12 |
| 31 Mar 2021 | £336K | £59K | £359K | £298K | 11 |
| 31 Mar 2020 | £316K | £115K | £274K | £273K | 11 |
| 31 Mar 2019 | £243K | £23K | £157K | £229K | 11 |
| 31 Mar 2018 | £245K | £34K | £179K | £250K | 11 |
| 31 Mar 2017 | £244K | £34K | £120K | £196K | 11 |
| 31 Mar 2016 | £282K | £49K | £220K | £262K |
Where Cromwell Engineering Limited is registered
The registered office is in Walton on Thames (KT12), in the Elmbridge local authority area, South East. Show KT12 3NL on a map.
Other trade companies in KT12
- Homekeep LimitedCleaning companies
- Nina Grace Gardens LtdLandscapers and gardeners
- Verge Motors LtdMotor traders
- Warner Climate Co LtdPlumbers and heating engineers
- Comfy Rooms Air-Conditioning LtdPlumbers and heating engineers
- Robfern Truck and Trailer LtdMechanics and garages
- Lotus Windows & Doors LtdInstallers
- Fine Stitch LtdRepair services
What happens if Cromwell Engineering Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 01165702
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 April 1974 (52 years ago)
- Registered office
- 1B Cromwell Road, Walton on Thames, Surrey, KT12 3NL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 24 August 2026
- Charges (mortgages)
- 0 outstanding of 1 registered
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Walton on Thames
Other active plumbing and heating companies registered in Walton on Thames.
- D Clark Heating & Plumbing Limited2013
- Progas Heating and Plumbing Limited2011
- Surrey Gas and Services Limited2018
All plumbing and heating companies in Walton on Thames · All trades in Walton on Thames · Plumbers and heating engineers across the UK
Frequently asked questions
When are Cromwell Engineering Limited's accounts due?
Cromwell Engineering Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Cromwell Engineering Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Cromwell Engineering Limited still trading?
Cromwell Engineering Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Cromwell Engineering Limited do?
Cromwell Engineering Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290).
How old is Cromwell Engineering Limited?
Cromwell Engineering Limited was incorporated on 4 April 1974, 52 years ago.
What is the penalty if Cromwell Engineering Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Cromwell Engineering Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.