- Companies
- Machinery repair and installation
- London
- Prontolocksmiths Limited
Prontolocksmiths Limited
- Company number
- 10180483
- Incorporated
- 16 May 201610 years trading
- Registered office
- 166 Lordship Road, London, N16 5HB
- Nature of business
- Repair of other equipment
Prontolocksmiths Limited is a 10-year-old private limited company registered in London, company number 10180483, one of 1,743 machinery repair and installation companies in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £27K (+25.1%) on the year before, to £133K.
- Net assets rose in 8 of 8 year-on-year comparisons on record.
- Current assets of £111K against £5,141 owed within a year: more than 10 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £133K | £111K | £5,141 | 2 | |
| 31 May 2024 | £106K | £128K | £24K | 2 | |
| 31 May 2023 | £72K | £91K | £23K | 3 | |
| 31 May 2022 | £56K | £66K | £14K | 3 | |
| 31 May 2021 | £35K | £42K | £9,435 | 4 | |
| 31 May 2020 | £12K | £18K | £10K | 4 | |
| 31 May 2019 | £4,457 | £14K | £1,136 | 1 | |
| 31 May 2018 | £2,323 | £9,251 | £1,630 | 1 | |
| 31 May 2017 | £735 | £5,612 | £197 |
Where Prontolocksmiths Limited is registered
The registered office is in London (N16), in the Hackney local authority area, London. Show N16 5HB on a map.
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What happens if Prontolocksmiths 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 10180483
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 May 2016 (10 years ago)
- Registered office
- 166 Lordship Road, London, N16 5HB
- Nature of business
- Repair of other equipment (SIC 33190)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 15 May 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in London
Other active machinery repair and installation companies registered in London.
- Property JNS Ltd2022
- Propserv Group Ltd2018
- Proservelectrical Ltd2026
- Protech Engineers Ltd2026
- Protech Network Solutions Ltd2011
- Protek Contracts Ltd2010
- PS Industrial Coatings Group Ltd2026
- PSV Plumbing & Heating Limited2011
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Frequently asked questions
When are Prontolocksmiths Limited's accounts due?
Prontolocksmiths Limited's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Prontolocksmiths Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Prontolocksmiths Limited still trading?
Prontolocksmiths 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 Prontolocksmiths Limited do?
Prontolocksmiths Limited is registered under Repair of other equipment (SIC 33190).
How old is Prontolocksmiths Limited?
Prontolocksmiths Limited was incorporated on 16 May 2016, 10 years ago.
What is the penalty if Prontolocksmiths 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 Prontolocksmiths 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.