- Companies
- Plumbers and heating engineers
- A.K. Marshall Gas Specialists Ltd
A.K. Marshall Gas Specialists Ltd
- Company number
- 04553983
- Incorporated
- 4 Oct 200224 years trading
- Registered office
- Unit D South Cambridge Business Park, Babraham Road, Sawston, Cambridgeshire, CB22 3JH
- Nature of business
- Plumbing, heat and air-conditioning installation
A.K. Marshall Gas Specialists Ltd is a 24-year-old private limited company registered in Sawston, company number 04553983, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £3,581 (+6%) on the year before, to £63K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £132K against £79K owed within a year: 1.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £63K | £123K | £132K | £79K | 0 |
| 31 Oct 2023 | £59K | £87K | £103K | £52K | 2 |
| 31 Oct 2022 | £74K | £140K | £156K | £90K | 2 |
| 31 Oct 2021 | £68K | £117K | £125K | £66K | 2 |
| 31 Oct 2020 | £41K | £56K | £65K | £35K | 2 |
| 31 Oct 2019 | £21K | £22K | £27K | £19K | 2 |
| 31 Oct 2018 | £19K | £18K | £32K | £29K | 2 |
| 31 Oct 2017 | £19K | £29K | £34K | £36K | 2 |
| 31 Oct 2016 | £28K | £33K | £40K | £36K | |
| 31 Oct 2015 | £19K | £28K | £39K | £28K |
Where A.K. Marshall Gas Specialists Ltd is registered
The registered office is in Sawston (CB22), in the South Cambridgeshire local authority area, East of England. Show CB22 3JH on a map.
Other trade companies in CB22
- Forgecambs LtdJoiners and carpenters
- Custom Window Cleaning Services LtdCleaning companies
- Lilly's Pristine Services LtdCleaning companies
- Central Integrated Services LimitedFinishing trades
- Astronat Property Services LtdFacilities management
- Gregory Motorcare LtdMechanics and garages
- Bamber Estates LimitedProperty developers
- Superior Solutions Group LtdCleaning companies
Also registered at this address
19 other companies use the same registered office as A.K. Marshall Gas Specialists Ltd.
- A Westley Construction LtdFinishing trades
- Anderson Bespoke Construction LtdBuilders
- Autostore Europe LtdMechanics and garages
- BJB Electrical Contracts LtdElectricians
- Cambridge Formwork Services LtdInstallers
- Cambridge Professional Properties LimitedProperty developers
- E.R.Shopfitters Ltd.Joiners and carpenters
- Electec Cambridge LtdElectricians
- Excel Carpentry Contractors LtdFinishing trades
- G.Cook & Sons LimitedPlasterers
- Ice Projects LimitedFinishing trades
- K Gibbs Construction LimitedBuilders
- Mantaray Abseil LimitedSpecialist contractors
- Metal Rainwater Solutions LtdRoofers
- Performance Roofing LtdRoofers
- Prime Plumbing (Cambridge) LtdPlumbers and heating engineers
- S J Gill Fencing LimitedFacilities management
- Sheerline Plastering LimitedPlasterers
- The Cambridge Flooring Company LimitedFinishing trades
What happens if A.K. Marshall Gas Specialists 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 04553983
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 October 2002 (24 years ago)
- Registered office
- Unit D South Cambridge Business Park, Babraham Road, Sawston, Cambridgeshire, CB22 3JH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 4 October 2025
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies
Other active plumbing and heating companies.
Frequently asked questions
When are A.K. Marshall Gas Specialists Ltd's accounts due?
A.K. Marshall Gas Specialists Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is A.K. Marshall Gas Specialists 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 October 2025, due by 31 October 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is A.K. Marshall Gas Specialists Ltd still trading?
A.K. Marshall Gas Specialists 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 A.K. Marshall Gas Specialists Ltd do?
A.K. Marshall Gas Specialists Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is A.K. Marshall Gas Specialists Ltd?
A.K. Marshall Gas Specialists Ltd was incorporated on 4 October 2002, 24 years ago.
What is the penalty if A.K. Marshall Gas Specialists 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 A.K. Marshall Gas Specialists 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.