- Companies
- Civil engineering
- Clocktower Design & Construction Limited
Clocktower Design & Construction Limited
- Company number
- 01684208
- Incorporated
- 6 Dec 198243 years trading
- Registered office
- 23 Inderwick Road, London, N8 9LB
- Nature of business
- Construction of other civil engineering projects n.e.c.
Clocktower Design & Construction Limited is a 43-year-old private limited company, company number 01684208, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £4,766 (+6.6%) on the year before, to £76K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £80K against £3,318 owed within a year: more than 10 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £76K | £80K | £3,318 | 0 | |
| 31 Dec 2024 | £72K | £76K | £4,037 | 0 | |
| 31 Dec 2023 | £67K | £71K | £3,778 | 0 | |
| 31 Dec 2022 | £64K | £68K | £4,754 | 0 | |
| 31 Dec 2021 | £62K | £71K | £9,303 | 0 | |
| 31 Dec 2020 | £49K | £64K | £15K | 0 | |
| 30 Dec 2020 | £49K | £64K | £15K | 0 | |
| 31 Dec 2019 | £58K | £73K | £16K | 0 | |
| 31 Dec 2018 | £52K | £70K | £18K | ||
| 31 Dec 2017 | £46K | £57K | £11K |
Where Clocktower Design & Construction Limited is registered
The registered office is in the N8 postcode district, in the Haringey local authority area, London. Show N8 9LB on a map.
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What happens if Clocktower Design & Construction 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 01684208
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 December 1982 (43 years ago)
- Registered office
- 23 Inderwick Road, London, N8 9LB
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 18 October 2025
- Charges (mortgages)
- 1 outstanding of 1 registered
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies
Other active civil engineering contractors.
Frequently asked questions
When are Clocktower Design & Construction Limited's accounts due?
Clocktower Design & Construction Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Clocktower Design & Construction Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Clocktower Design & Construction Limited still trading?
Clocktower Design & Construction 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 Clocktower Design & Construction Limited do?
Clocktower Design & Construction Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Clocktower Design & Construction Limited?
Clocktower Design & Construction Limited was incorporated on 6 December 1982, 43 years ago.
What is the penalty if Clocktower Design & Construction 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 Clocktower Design & Construction 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.