- Companies
- Plumbers and heating engineers
- Harrow
- True North Mechanical Ltd.
True North Mechanical Ltd.
- Company number
- 10101815
- Incorporated
- 4 Apr 201610 years trading
- Registered office
- 166 College Road, Harrow, HA1 1BH
- Nature of business
- Plumbing, heat and air-conditioning installation
True North Mechanical Ltd. is a 10-year-old private limited company registered in Harrow, company number 10101815, one of 154 plumbing and heating companies in Harrow. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
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 down £3,554 (-99.4%) on the year before, to £21.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £268K against £270K owed within a year: 1.0 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £21 | £33K | £268K | £270K | 3 |
| 31 Jan 2025 | £3,575 | £16K | £36K | £36K | 3 |
| 31 Jan 2024 | £37K | £16K | £232K | £197K | 3 |
| 31 Jan 2023 | £768 | £65K | £96K | £96K | 2 |
| 31 Jan 2022 | -£60K | -£7,009 | £10K | £72K | 2 |
| 31 Jan 2021 | £39K | £134K | £153K | £116K | 2 |
| 31 Jan 2020 | £76K | £161K | £224K | £152K | 2 |
| 5 Apr 2019 | £130K | £52K | £181K | £55K | 3 |
| 5 Apr 2018 | £29K | £27K | £79 | ||
| 5 Apr 2017 | £1,549 | £3,632 | £933 |
Where True North Mechanical Ltd. is registered
The registered office is in Harrow (HA1), in the Harrow local authority area, London. Show HA1 1BH on a map.
Other trade companies in HA1
- Cabos Electrical LimitedElectricians
- Mia Maria Services LtdCleaning companies
- Ac Operations LtdScaffolders
- Verde Masters LtdLandscapers and gardeners
- Omega Works Group LtdLandscapers and gardeners
- Call 'Em LimitedPlumbers and heating engineers
- Swan Roofing Services LimitedRoofers
- DRV Property Solutions LtdPainters and decorators
Shared registered office
32 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if True North Mechanical Ltd. 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 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 10101815
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 April 2016 (10 years ago)
- Registered office
- 166 College Road, Harrow, HA1 1BH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 12 February 2026
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 Harrow
Other active plumbing and heating companies registered in Harrow.
- TVP Fire Ltd2022
- UK Drainage Solutions Limited2020
- UK Gas & Plumbing Limited2011
- Universal Heating & Plumbing Limited2003
- Uts Heating Ltd2026
- Vaillant Engineer Limited2019
- Viessmann Engineer Limited2017
- Village Heating Limited1999
All plumbing and heating companies in Harrow · All trades in Harrow · Plumbers and heating engineers across the UK
Frequently asked questions
When are True North Mechanical Ltd.'s accounts due?
True North Mechanical Ltd.'s next accounts are due at Companies House by 31 October 2027 (in 383 days), covering the period to 31 January 2027.
When is True North Mechanical Ltd.'s CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is True North Mechanical Ltd. still trading?
True North Mechanical Ltd. 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 True North Mechanical Ltd. do?
True North Mechanical Ltd. is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is True North Mechanical Ltd.?
True North Mechanical Ltd. was incorporated on 4 April 2016, 10 years ago.
What is the penalty if True North Mechanical Ltd. 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 True North Mechanical Ltd. 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.