- Company number
- 17430414
- Incorporated
- 1 Sep 2026
- Registered office
- 44 Pymers Mead, London, SE21 8NH
- Nature of business
- Roofing activities
Se21 Ltd is a newly incorporated private limited company registered in London, company number 17430414, one of 692 roofing companies in London. Its next accounts are due at Companies House on 1 June 2028, and its first CT600 is due at HMRC on 31 August 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Se21 Ltd is registered
The registered office is in London (SE21), in the Lambeth local authority area, London. Show SE21 8NH on a map.
Other trade companies in SE21
- Dunridge Pro Clean LtdCleaning companies
- Lanbury Group Construction LimitedBuilders
- E&L Building Services LtdSpecialist contractors
- Mitford Construction LtdBuilders
- Trueshine Solutions LimitedCleaning companies
- Green & Yellow Electrical LimitedElectricians
- A Ford Roofing LimitedRoofers
- TBT Alloys LtdPainters and decorators
What happens if Se21 Ltd 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 1 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Jun 2028 to 1 Jul 2028 | £150 |
| 1 to 3 months late | 2 Jul 2028 to 1 Sep 2028 | £375 |
| 3 to 6 months late | 2 Sep 2028 to 1 Dec 2028 | £750 |
| More than 6 months late | From 2 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2029 | 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
- 17430414
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 September 2026
- Registered office
- 44 Pymers Mead, London, SE21 8NH
- Nature of business
- Roofing activities (SIC 43910)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for roofing companies
Roofing companies commonly work under CIS and run vans and access equipment, so CIS deductions and capital allowances are the two things to get right.
Similar companies in London
Other active roofing companies registered in London.
- Sealtop Roofing Systems Ltd2026
- Seaview Construction Specialist Ltd2026
- Second City Roofing and Guttering Ltd2025
- Sentinel Roofing Limited2022
- Sha Contractor Roofing and Guttering Ltd2020
- Shakespeare Roofing and Building Contractors Limited1983
- Shield Roofing Contractors Ltd2024
- Shoreline Property Care Ltd2026
All roofing companies in London · All trades in London · Roofers across the UK
Frequently asked questions
When are Se21 Ltd's accounts due?
Se21 Ltd's next accounts are due at Companies House by 1 June 2028 (in 598 days), covering the period to 30 September 2027.
When is Se21 Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 August 2027, due by 31 August 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Se21 Ltd still trading?
Se21 Ltd 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 Se21 Ltd do?
Se21 Ltd is registered under Roofing activities (SIC 43910).
How old is Se21 Ltd?
Se21 Ltd was incorporated on 1 September 2026, less than a year ago.
What is the penalty if Se21 Ltd 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 Se21 Ltd 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.