- Companies
- Installers
- London
- Coldharbour Industries Ltd
Coldharbour Industries Ltd
- Company number
- 11701453
- Incorporated
- 28 Nov 20187 years trading
- Registered office
- 17 Pennine Parade, Pennine Drive, London, NW2 1NT
- Nature of business
- Other construction installation; Other business support service activities n.e.c.; Support activities to performing arts; Artistic creation
Coldharbour Industries Ltd is a 7-year-old private limited company registered in London, company number 11701453, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Companies House shows its accounts as overdue: they were due on 31 August 2026.
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 £29K (-54.2%) on the year before, to £25K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £120K against £122K owed within a year: 1.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2024 | £25K | £77K | £120K | £122K | 0 |
| 30 Nov 2023 | £54K | £76K | £96K | £68K | 2 |
| 30 Nov 2022 | £104K | £176K | £78K | 2 | |
| 30 Nov 2021 | £5,049 | £54K | £49K | 2 | |
| 30 Nov 2020 | £1,394 | £29K | £28K | 2 | |
| 30 Nov 2019 | -£1,177 | £1,308 | 1 |
Where Coldharbour Industries Ltd is registered
The registered office is in London (NW2), in the Barnet local authority area, London. Show NW2 1NT on a map.
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Shared registered office
134 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 Coldharbour Industries Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2026 to 30 Sep 2026 | £150 |
| 1 to 3 months late | 1 Oct 2026 to 30 Nov 2026 | £375 |
| 3 to 6 months late | 1 Dec 2026 to 28 Feb 2027 | £750 |
| More than 6 months late | From 1 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 30 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 2027 | 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
- 11701453
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 November 2018 (7 years ago)
- Registered office
- 17 Pennine Parade, Pennine Drive, London, NW2 1NT
- Nature of business
- Other construction installation (SIC 43290)
Other business support service activities n.e.c. (SIC 82990)
Support activities to performing arts (SIC 90020)
Artistic creation (SIC 90030) - Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2024
- Last confirmation statement
- 27 November 2025
- Previous names
- Alpha Waffle Ltd (until 28 Jul 2020)
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Collection of Pablos Arts Ltd2025
- Comfyseal Ltd2025
- Commercial Solar UK Limited2025
- Compartis Ltd2026
- Compartmentation Solutions Limited2025
- Complete Homes (Maintenance) Limited2009
- Connaught Place Limited2013
- Connectify Services Ltd2025
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Coldharbour Industries Ltd's accounts due?
Coldharbour Industries Ltd's accounts were due at Companies House on 31 August 2026 and the register shows them as overdue.
When is Coldharbour Industries Ltd's CT600 due?
The CT600 for the period to 30 November 2025 is due at HMRC by 30 November 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2026.
Is Coldharbour Industries Ltd still trading?
Coldharbour Industries Ltd is listed as active on the Companies House register (checked 13 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 Coldharbour Industries Ltd do?
Coldharbour Industries Ltd is registered under Other construction installation (SIC 43290); Other business support service activities n.e.c. (SIC 82990); Support activities to performing arts (SIC 90020); Artistic creation (SIC 90030).
How old is Coldharbour Industries Ltd?
Coldharbour Industries Ltd was incorporated on 28 November 2018, 7 years ago.
What is the penalty if Coldharbour Industries 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 Coldharbour Industries Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.