- Companies
- Plumbers and heating engineers
- Doncaster
- At Boiler Company Ltd
At Boiler Company Ltd
- Company number
- 11125875
- Incorporated
- 27 Dec 20178 years trading
- Registered office
- 100 Tickhill Road, Doncaster, DN4 8QQ
- Nature of business
- Plumbing, heat and air-conditioning installation
At Boiler Company Ltd is a 8-year-old private limited company registered in Doncaster, company number 11125875, one of 150 plumbing and heating companies in Doncaster. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
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 down £17K (-68.8%) on the year before, to £7,565.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- Current assets of £25K against £26K owed within a year: 0.9 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £7,565 | £25K | £26K | 2 | |
| 31 Dec 2024 | £24K | £28K | £20K | 2 | |
| 31 Dec 2023 | £37K | £32K | £20K | 1 | |
| 31 Dec 2022 | £11K | £20K | £13K | 2 | |
| 31 Dec 2021 | £2,787 | £29K | £17K | 2 | |
| 31 Dec 2020 | £4,990 | £21K | £7,311 | 2 | |
| 31 Dec 2019 | £6,559 | £8,715 | £13K | 3 | |
| 31 Dec 2018 | £927 | £15K | £18K |
Where At Boiler Company Ltd is registered
The registered office is in Doncaster (DN4), in the Doncaster local authority area, Yorkshire and The Humber. Show DN4 8QQ on a map.
Other trade companies in DN4
- Krishtal Cleaning LtdCleaning companies
- Regional Services & Maintenance LtdElectricians
- Kristan Carr E&M LimitedElectricians
- Brookes Home and Heating LtdBuilders
- 1ST Ground Construction Management Services LtdProperty developers
- Speedy Transport Doncaster LtdMechanics and garages
- Team Clean Group Commercial LtdCleaning companies
- Veridian Guard LtdInstallers
What happens if At Boiler Company 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 11125875
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 December 2017 (8 years ago)
- Registered office
- 100 Tickhill Road, Doncaster, DN4 8QQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 26 December 2025
- Previous names
- At Mechanical Ltd (until 21 Oct 2019)
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 in Doncaster
Other active plumbing and heating companies registered in Doncaster.
- Auxilium Plumbing Limited2018
- BD Heating Ltd2026
- Bell Plumbing & Heating (Doncaster) Limited2010
- Betts Mep Ltd2018
- BF Joinery and Property Maintenance Ltd2026
- Braham PH Ltd2025
- Braham Plumbing & Heating Ltd2019
- C & D Bathrooms Limited2023
All plumbing and heating companies in Doncaster · All trades in Doncaster · Plumbers and heating engineers across the UK
Frequently asked questions
When are At Boiler Company Ltd's accounts due?
At Boiler Company Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is At Boiler Company Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is At Boiler Company Ltd still trading?
At Boiler Company 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 At Boiler Company Ltd do?
At Boiler Company Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is At Boiler Company Ltd?
At Boiler Company Ltd was incorporated on 27 December 2017, 8 years ago.
What is the penalty if At Boiler Company 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 At Boiler Company 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.