- Companies
- Specialist contractors
- London
- Act Developments London Limited
Act Developments London Limited
- Company number
- 08312799
- Incorporated
- 29 Nov 201213 years trading
- Registered office
- 9 Glenthorne Mews, 115A Glenthorne Road, London, W6 0LJ
- Nature of business
- Other specialised construction activities n.e.c.
Act Developments London Limited is a 13-year-old private limited company registered in London, company number 08312799, 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 £249K (+13.5%) on the year before, to £2.1M.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £4.5M against £2.8M owed within a year: 1.6 times cover.
- 46 employees on average, up from 39 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 | £2.1M | £2.6M | £4.5M | £2.8M | 46 |
| 31 Mar 2024 | £1.8M | £2.2M | £4.4M | £3.2M | 39 |
| 31 Mar 2023 | £1.8M | £3.3M | £4.3M | £2.7M | 25 |
| 31 Mar 2022 | £2.6M | £3.7M | £4.4M | £1.8M | 20 |
| 31 Mar 2021 | £2.1M | £3.2M | £3.5M | £1.2M | 18 |
| 31 Mar 2020 | £1.6M | £2.4M | £2.9M | £1.2M | 13 |
| 31 Mar 2019 | £1.2M | £2.5M | £2.7M | £1.3M | 9 |
| 31 Mar 2018 | £799K | £1.1M | £1.7M | £752K | |
| 31 Mar 2017 | £626K | £1.4M | £1.7M | £1.1M | |
| 31 Mar 2016 | £334K | £965K | £1.2M | £833K |
Where Act Developments London Limited is registered
The registered office is in London (W6), in the Hammersmith and Fulham local authority area, London. Show W6 0LJ on a map.
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What happens if Act Developments London 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
- 08312799
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 November 2012 (13 years ago)
- Registered office
- 9 Glenthorne Mews, 115A Glenthorne Road, London, W6 0LJ
- 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
- 19 April 2026
- Charges (mortgages)
- 1 outstanding of 3 registered
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.
- Actionshake Limited1996
- Active Personnel Inc Ltd2025
- Acuo Si Ltd.2026
- Acute Energy Ltd2020
- Acute Services (UK) Ltd2015
- Ad BM UK Ltd2020
- Ad Development Solution Ltd2026
- Ad Safe Ltd2026
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Act Developments London Limited's accounts due?
Act Developments London 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 Act Developments London 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 Act Developments London Limited still trading?
Act Developments London 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 Act Developments London Limited do?
Act Developments London Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Act Developments London Limited?
Act Developments London Limited was incorporated on 29 November 2012, 13 years ago.
What is the penalty if Act Developments London 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 Act Developments London 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.