- Companies
- Installers
- London
- Sentry Post Solutions Ltd
Sentry Post Solutions Ltd
- Company number
- 16531480
- Incorporated
- 20 Jun 20251 year trading
- Registered office
- 167- 169 Great Portland Street, 5TH Floor, London, W1W 5PF
- Nature of business
- Other construction installation
Sentry Post Solutions Ltd is a 1-year-old private limited company registered in London, company number 16531480, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 20 March 2027, and its first CT600 is due at HMRC on 19 June 2027.
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.
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Where Sentry Post Solutions Ltd is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5PF on a map.
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- Holly’S Housekeeping LtdCleaning companies
Shared registered office
1,494 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Sentry Post Solutions 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 20 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Mar 2027 to 20 Apr 2027 | £150 |
| 1 to 3 months late | 21 Apr 2027 to 20 Jun 2027 | £375 |
| 3 to 6 months late | 21 Jun 2027 to 20 Sep 2027 | £750 |
| More than 6 months late | From 21 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 16531480
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 June 2025 (1 year ago)
- Registered office
- 167- 169 Great Portland Street, 5TH Floor, London, W1W 5PF
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 17 June 2026
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 in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Sequoia Contracts Ltd2022
- Serban DC Ltd2023
- Setwo Limited2008
- Seundbuilder Property Construction and Maintenance Limited2020
- SFS Groundworks Limited2020
- SG Wind Global Ltd2026
- Sgeom Fixing Ltd2024
- Sgi Building Services Ltd2021
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Sentry Post Solutions Ltd's accounts due?
Sentry Post Solutions Ltd's next accounts are due at Companies House by 20 March 2027 (in 159 days), covering the period to 30 June 2026.
When is Sentry Post Solutions 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 19 June 2026, due by 19 June 2027, and one for the period to 30 June 2026, due by 30 June 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sentry Post Solutions Ltd still trading?
Sentry Post Solutions 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 Sentry Post Solutions Ltd do?
Sentry Post Solutions Ltd is registered under Other construction installation (SIC 43290).
How old is Sentry Post Solutions Ltd?
Sentry Post Solutions Ltd was incorporated on 20 June 2025, 1 year ago.
What is the penalty if Sentry Post Solutions 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 Sentry Post Solutions 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.