- Companies
- Civil engineering
- Whitstable
- Pcunderground Limited
Pcunderground Limited
- Company number
- 16571299
- Incorporated
- 9 Jul 20251 year trading
- Registered office
- 194A Tankerton Road, Whitstable, CT5 2AS
- Nature of business
- Construction of railways and underground railways
Pcunderground Limited is a 1-year-old private limited company registered in Whitstable, company number 16571299, one of 10 civil engineering contractors in Whitstable. Its next accounts are due at Companies House on 9 April 2027, and its first CT600 is due at HMRC on 8 July 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 Pcunderground Limited is registered
The registered office is in Whitstable (CT5), in the Canterbury local authority area, South East. Show CT5 2AS on a map.
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What happens if Pcunderground 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 9 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 Apr 2027 to 9 May 2027 | £150 |
| 1 to 3 months late | 10 May 2027 to 9 Jul 2027 | £375 |
| 3 to 6 months late | 10 Jul 2027 to 9 Oct 2027 | £750 |
| More than 6 months late | From 10 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16571299
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 July 2025 (1 year ago)
- Registered office
- 194A Tankerton Road, Whitstable, CT5 2AS
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
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 Whitstable
Other active civil engineering contractors registered in Whitstable.
- WK Management Services Ltd2026
- Woodward Construction Solutions Ltd2025
- Asherrail Limited2022
- Azimuth Ventures Ltd2019
- B. Wahl & Co. Contractors (Kent) Limited1979
- Benosa Logistics Service Ltd2026
- Dgus Group Ltd2024
- Lola Rail Limited2018
All civil engineering contractors in Whitstable · All trades in Whitstable · Civil engineering across the UK
Frequently asked questions
When are Pcunderground Limited's accounts due?
Pcunderground Limited's next accounts are due at Companies House by 9 April 2027 (in 179 days), covering the period to 31 July 2026.
When is Pcunderground Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 8 July 2026, due by 8 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Pcunderground Limited still trading?
Pcunderground 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 Pcunderground Limited do?
Pcunderground Limited is registered under Construction of railways and underground railways (SIC 42120).
How old is Pcunderground Limited?
Pcunderground Limited was incorporated on 9 July 2025, 1 year ago.
What is the penalty if Pcunderground 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 Pcunderground 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.