- Companies
- Specialist contractors
- London
- 19Mil Ltd.
19Mil Ltd.
- Company number
- 11806868
- Incorporated
- 5 Feb 20197 years trading
- Registered office
- Unit 111, 10 Streatleigh Parade, Streatham High Road, London, SW16 1EQ
- Nature of business
- Other specialised construction activities n.e.c.
19Mil Ltd. is a 7-year-old private limited company registered in London, company number 11806868, one of 4,318 specialist construction companies in London. 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 £12K (+9.8%) on the year before, to £132K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £134K against £34K owed within a year: 3.9 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £132K | £73K | £134K | £34K | 2 |
| 31 Mar 2024 | £120K | £79K | £138K | £50K | 1 |
| 31 Mar 2023 | £62K | £62K | £106K | £33K | 1 |
| 31 Mar 2022 | £366 | £31K | £67K | £36K | 1 |
| 31 Mar 2021 | -£16K | £15K | £20K | £1,000 | 0 |
| 31 Mar 2020 | £3,446 | £16K | £12K | 1 |
Where 19Mil Ltd. is registered
The registered office is in London (SW16), in the Lambeth local authority area, London. Show SW16 1EQ on a map.
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What happens if 19Mil 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 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
- 11806868
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 February 2019 (7 years ago)
- Registered office
- Unit 111, 10 Streatleigh Parade, Streatham High Road, London, SW16 1EQ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 2 February 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- 1Pandpc Ltd2024
- 2 Build Or Not to Build Limited2017
- 2 Tec Heating and Construction Services Ltd2022
- 2025 Group Ltd2025
- 2025 Ltd2025
- 22 London Projects Ltd2026
- 23 Access Ltd2021
- 24/7 London Facilities Ltd2026
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are 19Mil Ltd.'s accounts due?
19Mil Ltd.'s next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is 19Mil Ltd.'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 19Mil Ltd. still trading?
19Mil 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 19Mil Ltd. do?
19Mil Ltd. is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is 19Mil Ltd.?
19Mil Ltd. was incorporated on 5 February 2019, 7 years ago.
What is the penalty if 19Mil 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 19Mil 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.