- Companies
- Civil engineering
- Plymouth
- Quantock Engineering Services Ltd
Quantock Engineering Services Ltd
- Company number
- 16261663
- Incorporated
- 19 Feb 20251 year trading
- Registered office
- Barbican House, 36 New Street, Plymouth, PL1 2NA
- Nature of business
- Construction of other civil engineering projects n.e.c.
Quantock Engineering Services Ltd is a 1-year-old private limited company registered in Plymouth, company number 16261663, one of 41 civil engineering contractors in Plymouth. Its next accounts are due at Companies House on 19 November 2026, and its first CT600 is due at HMRC on 18 February 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 Quantock Engineering Services Ltd is registered
The registered office is in Plymouth (PL1), in the Plymouth local authority area, South West. Show PL1 2NA on a map.
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Also registered at this address
11 other companies use the same registered office as Quantock Engineering Services Ltd.
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What happens if Quantock Engineering Services 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 19 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 Nov 2026 to 19 Dec 2026 | £150 |
| 1 to 3 months late | 20 Dec 2026 to 19 Feb 2027 | £375 |
| 3 to 6 months late | 20 Feb 2027 to 19 May 2027 | £750 |
| More than 6 months late | From 20 May 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
- 16261663
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 February 2025 (1 year ago)
- Registered office
- Barbican House, 36 New Street, Plymouth, PL1 2NA
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 2 February 2026
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 Plymouth
Other active civil engineering contractors registered in Plymouth.
- SDS Civils (SW) Ltd.2016
- Sean Rees Engineering Services Ltd2011
- Silks Civil Engineering Ltd2025
- Skyrotec Limited2026
- Voltworks Limited2025
- Waterworxz Ltd2022
- Armada Civil Engineering (SW) Limited2015
- Beaverford Limited1985
All civil engineering contractors in Plymouth · All trades in Plymouth · Civil engineering across the UK
Frequently asked questions
When are Quantock Engineering Services Ltd's accounts due?
Quantock Engineering Services Ltd's next accounts are due at Companies House by 19 November 2026 (in 38 days), covering the period to 28 February 2026.
When is Quantock Engineering Services 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 18 February 2026, due by 18 February 2027, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Quantock Engineering Services Ltd still trading?
Quantock Engineering Services 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 Quantock Engineering Services Ltd do?
Quantock Engineering Services Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Quantock Engineering Services Ltd?
Quantock Engineering Services Ltd was incorporated on 19 February 2025, 1 year ago.
What is the penalty if Quantock Engineering Services 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 Quantock Engineering Services 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.