- Companies
- Civil engineering
- Barking
- Mowatt and Son Rail Ltd
Mowatt and Son Rail Ltd
- Company number
- 15082140
- Incorporated
- 18 Aug 20233 years trading
- Registered office
- 11 Town Quay Wharf, Abbey Road, Barking, Essex, IG11 7BZ
- Nature of business
- Construction of railways and underground railways; Other specialised construction activities n.e.c.
Mowatt and Son Rail Ltd is a 3-year-old private limited company registered in Barking, company number 15082140, one of 39 civil engineering contractors in Barking. Companies House shows its accounts as overdue: they were due on 31 August 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Mowatt and Son Rail Ltd is registered
The registered office is in Barking (IG11), in the Barking and Dagenham local authority area, London. Show IG11 7BZ on a map.
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Also registered at this address
4 other companies use the same registered office as Mowatt and Son Rail Ltd.
- Chris Michael Shelters LimitedBuilders
- Ochacho Real Homes UK LtdProperty developers
- Omihani Rail and Construction Company LtdSpecialist contractors
- Ugo Best LimitedMotor traders
What happens if Mowatt and Son Rail Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2026 to 30 Sep 2026 | £150 |
| 1 to 3 months late | 1 Oct 2026 to 30 Nov 2026 | £375 |
| 3 to 6 months late | 1 Dec 2026 to 28 Feb 2027 | £750 |
| More than 6 months late | From 1 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 30 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 2027 | 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
- 15082140
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 August 2023 (3 years ago)
- Registered office
- 11 Town Quay Wharf, Abbey Road, Barking, Essex, IG11 7BZ
- Nature of business
- Construction of railways and underground railways (SIC 42120)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2024
- Last confirmation statement
- 17 August 2025
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 Barking
Other active civil engineering contractors registered in Barking.
- Nashi.Golden Limited2026
- Netrail Defense Solutions Ltd2026
- Noble Med Solutions Ltd2020
- NV9 Service Ltd2021
- Oak-Tech Contract Services Ltd2022
- Obese Company Limited2025
- Pmelo Consultant Ltd2019
- Present at Site Ltd2021
All civil engineering contractors in Barking · All trades in Barking · Civil engineering across the UK
Frequently asked questions
When are Mowatt and Son Rail Ltd's accounts due?
Mowatt and Son Rail Ltd's accounts were due at Companies House on 31 August 2026 and the register shows them as overdue.
When is Mowatt and Son Rail 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 2025, due by 31 August 2026, and one for the period to 30 November 2025, due by 30 November 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mowatt and Son Rail Ltd still trading?
Mowatt and Son Rail Ltd is listed as active on the Companies House register (checked 13 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 Mowatt and Son Rail Ltd do?
Mowatt and Son Rail Ltd is registered under Construction of railways and underground railways (SIC 42120); Other specialised construction activities n.e.c. (SIC 43999).
How old is Mowatt and Son Rail Ltd?
Mowatt and Son Rail Ltd was incorporated on 18 August 2023, 3 years ago.
What is the penalty if Mowatt and Son Rail 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 Mowatt and Son Rail Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.