- Companies
- Electricians
- Sunbury-on-Thames
- Castle Maintenance Limited
Castle Maintenance Limited
- Company number
- 04090541
- Incorporated
- 16 Oct 200025 years trading
- Registered office
- 4 Claremont Avenue, Sunbury-on-Thames, TW16 5LX
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation; Other building completion and finishing
Castle Maintenance Limited is a 25-year-old private limited company registered in Sunbury-on-Thames, company number 04090541, one of 15 electrical contractors in Sunbury-on-Thames. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 rose in 1 of 8 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £100 | 0 | |||
| 29 Feb 2024 | £100 | £100 | £100 | 1 | |
| 28 Feb 2023 | £100 | £100 | £100 | 1 | |
| 31 May 2022 | £100 | £100 | £100 | 1 | |
| 31 May 2021 | £1 | £1 | 0 | ||
| 31 Dec 2020 | £5,681 | £5,681 | £0 | 0 | |
| 31 Mar 2020 | £51K | £115K | £64K | 0 | |
| 31 Mar 2019 | £97K | £135K | £37K | ||
| 31 Mar 2018 | £138K | £147K | £8,923 | ||
| 30 Mar 2018 | £138K | £147K | £7,923 |
Where Castle Maintenance Limited is registered
The registered office is in Sunbury-on-Thames (TW16), in the Spelthorne local authority area, South East. Show TW16 5LX on a map.
Other trade companies in TW16
- Top Lodge LtdProperty developers
- Sajaha Properties LimitedProperty developers
- Cineco Holdings LimitedSpecialist contractors
- Keyturn Clean LtdCleaning companies
- VM Conservatory Transformation LtdBuilders
- Nova Property Solutions LtdPainters and decorators
- Lee’S Home Improvements LtdBuilders
- Rapid Home Srvices LtdFinishing trades
Also registered at this address
1 other company uses the same registered office as Castle Maintenance Limited.
- Steven Butson Estimating (Sbe) LimitedSpecialist contractors
What happens if Castle Maintenance 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 04090541
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 October 2000 (25 years ago)
- Registered office
- 4 Claremont Avenue, Sunbury-on-Thames, TW16 5LX
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Other building completion and finishing (SIC 43390) - Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 4 August 2026
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Sunbury-on-Thames
Other active electrical contractors registered in Sunbury-on-Thames.
- Electrical Cable Installation Limited2023
- Electromatic Me Ltd2022
- Electropower Ltd2025
- Es Secure Electricals Ltd2026
- LMS Power & Lighting Ltd2021
- Onyx Electrical Installations Ltd2026
- PK Electrical Services Ltd2018
- Roundhouse Electrical Ltd2021
All electrical contractors in Sunbury-on-Thames · All trades in Sunbury-on-Thames · Electricians across the UK
Frequently asked questions
When are Castle Maintenance Limited's accounts due?
Castle Maintenance Limited's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Castle Maintenance Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Castle Maintenance Limited still trading?
Castle Maintenance 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 Castle Maintenance Limited do?
Castle Maintenance Limited is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Other building completion and finishing (SIC 43390).
How old is Castle Maintenance Limited?
Castle Maintenance Limited was incorporated on 16 October 2000, 25 years ago.
What is the penalty if Castle Maintenance 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 Castle Maintenance 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.