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- Excel Building Systems Limited
Company profile · Installers
Excel Building Systems Limited
Excel Building Systems Limited is a 13-year-old private limited company registered in Marylebone, company number 08654903, one of the UK's installation companies (insulation, lifts, shutters and similar). Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Excel Building Systems Limited is registered
The registered office is in Marylebone (W1U), in the Westminster local authority area, London. Show W1U 1PF on a map.
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Also registered at this address
2 other companies use the same registered office as Excel Building Systems Limited.
- C H Baker ST LimitedSpecialist contractors
- Tide Contracting LimitedProperty developers
What happens if Excel Building Systems 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 08654903
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 August 2013 (13 years ago)
- Registered office
- 4TH Floor, 11 - 15 Wigmore Street, Marylebone, London, W1U 1PF
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 19 August 2025
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies
Other active installation companies (insulation, lifts, shutters and similar).
- Cornerstone Yorkshire Ltd2013
- Styles of Bath Ltd2013
- Think Property Solutions Ltd2013
- Absolute Lifts Limited2013
- Steve Dunning Ltd2013
- Mike Newman Property Services Limited2013
- Wessex Building & Decorating Services Limited2013
- Supreme Blinds and Interiors Ltd2013
Frequently asked questions
When are Excel Building Systems Limited's accounts due?
Excel Building Systems Limited's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Excel Building Systems Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Excel Building Systems Limited still trading?
Excel Building Systems Limited is listed as active on the Companies House register (checked 12 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 Excel Building Systems Limited do?
Excel Building Systems Limited is registered under Other construction installation (SIC 43290).
How old is Excel Building Systems Limited?
Excel Building Systems Limited was incorporated on 19 August 2013, 13 years ago.
What is the penalty if Excel Building Systems 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 Excel Building Systems Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.