- Companies
- Civil engineering
- Wimbledon
- Theta Services Limited
Theta Services Limited
- Company number
- 00647460
- Incorporated
- 20 Jan 196066 years trading
- Registered office
- 13 Queens Road, Wimbledon, London, SW19 8NG
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other construction installation
Theta Services Limited is a 66-year-old private limited company registered in Wimbledon, company number 00647460, 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 £975 (+0.1%) on the year before, to £748K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- 2 employees on average during the year.
- 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 Dec 2025 | £748K | £34 | £66K | £0 | 2 |
| 31 Dec 2024 | £747K | £361 | £70K | £3,391 | 2 |
| 31 Dec 2023 | £753K | £487 | £68K | £5,711 | 2 |
| 31 Dec 2022 | £750K | £410 | £68K | £3,217 | 2 |
| 31 Dec 2021 | £760K | £5,436 | £69K | £9,458 | 2 |
| 31 Dec 2020 | £586K | £35K | £356K | £13K | 3 |
| 31 Dec 2019 | £558K | £379K | £1,004 | 3 | |
| 31 Dec 2018 | £566K | £383K | £35 | ||
| 31 Dec 2017 | £526K | £24K | £392K | £55K | |
| 31 Dec 2016 | £486K | £380K | £73K |
Who runs and owns Theta Services Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| C*** K*** | Director | before Jun 1992 |
| C*** K*** | Secretary | before Jun 1992 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| C*** K*** | Director | Dec 2018 |
Person with significant control
Charges (secured borrowing)
4 of 6 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Cheltenham & Gloucester PLC | Outstanding | Jan 2003 |
| Midland Bank PLC | Outstanding | Sep 1994 |
| Guardian Building Society. | Outstanding | May 1989 |
| Midland Bank PLC | Outstanding | Nov 1988 |
| Barclays Bank PLC | Satisfied Apr 2013 | Jan 2003 |
| Midland Bank PLC | Satisfied Apr 2003 | Feb 1987 |
Where Theta Services Limited is registered
The registered office is in Wimbledon (SW19), in the Merton local authority area, London. Show SW19 8NG on a map.
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What happens if Theta Services 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
- 00647460
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 January 1960 (66 years ago)
- Registered office
- 13 Queens Road, Wimbledon, London, SW19 8NG
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other construction installation (SIC 43290) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 11 August 2026
- Charges (mortgages)
- 4 outstanding of 6 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 in Wimbledon
Other active civil engineering contractors registered in Wimbledon.
All civil engineering contractors in Wimbledon · All trades in Wimbledon · Civil engineering across the UK
Frequently asked questions
When are Theta Services Limited's accounts due?
Theta Services Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Theta Services 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 Theta Services Limited still trading?
Theta Services 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 Theta Services Limited do?
Theta Services Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other construction installation (SIC 43290).
How old is Theta Services Limited?
Theta Services Limited was incorporated on 20 January 1960, 66 years ago.
Who runs Theta Services Limited?
Theta Services Limited has 1 active director. Their names and service addresses are on the Companies House register.
Who owns Theta Services Limited?
One person or company has significant control of Theta Services Limited: an individual (owns 75% or more of the shares).
What is the penalty if Theta Services 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 Theta Services 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.