- Companies
- Plumbers and heating engineers
- A T Heating Modules Ltd
A T Heating Modules Ltd
- Company number
- 10873078
- Incorporated
- 19 Jul 20179 years trading
- Registered office
- 84 Bull Stag Green, Hatfield, Hertfordshire, England, AL9 5DE
- Nature of business
- Plumbing, heat and air-conditioning installation; Wholesale of hardware, plumbing and heating equipment and supplies; Retail sale of electrical household appliances in specialised stores; Residents property management
A T Heating Modules Ltd is a 9-year-old private limited company registered in Hatfield, Hertfordshire, company number 10873078, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for A T Heating Modules LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £2,017 (+11.8%) on the year before, to £19K.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £47K against £43K owed within a year: 1.1 times cover.
- 3 employees on average, down from 8 the year before.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £19K | £47K | £43K | 3 | |
| 31 Jul 2024 | £17K | £38K | £22K | 8 | |
| 31 Jul 2023 | £35K | £50K | £18K | 8 | |
| 31 Jul 2022 | £293 | £26K | £29K | 7 | |
| 31 Jul 2021 | £22K | £46K | £23K | 6 | |
| 31 Jul 2020 | £4,887 | £18K | £16K | 3 | |
| 31 Jul 2019 | £2,141 | £8,052 | £8,879 | 2 |
Where A T Heating Modules Ltd is registered
The registered office is in Hatfield, Hertfordshire (AL9), in the Welwyn Hatfield local authority area, East of England. Show AL9 5DE on a map.
Other trade companies in AL9
- DMC Equity LtdProperty developers
- Summit Air Conditioning Services LtdPlumbers and heating engineers
- Teknosa Automotive LimitedMotor traders
- Enki Construction LtdBuilders
- Queensbury ST Ippolyts LimitedBuilders
- William Douglas Acquisitions LimitedProperty developers
- LG Site Services LimitedBuilders
- Miella Construction LtdPlumbers and heating engineers
What happens if A T Heating Modules 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 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
- 10873078
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 July 2017 (9 years ago)
- Registered office
- 84 Bull Stag Green, Hatfield, Hertfordshire, England, AL9 5DE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Wholesale of hardware, plumbing and heating equipment and supplies (SIC 46740)
Retail sale of electrical household appliances in specialised stores (SIC 47540)
Residents property management (SIC 98000) - Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 20 March 2026
- Previous names
- Go&Ko Services Limited (until 2 Mar 2026)
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.
- Service 2 (HVAC) Installations Limited2017
- Service 2 (HVAC) Group Limited2017
- Pipe Tech Heating & Plumbing Services Limited2017
- Able Plumbing Eastbourne Limited2017
- Hall's Plumbing & Heating Limited2017
- Turtle Drain and Plumbing Services Limited2017
- Grand Union Plumbing & Heating Ltd2017
- Cosy Fires Ltd2017
Frequently asked questions
When are A T Heating Modules Ltd's accounts due?
A T Heating Modules Ltd's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is A T Heating Modules Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is A T Heating Modules Ltd still trading?
A T Heating Modules 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 T Heating Modules Ltd do?
A T Heating Modules Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Wholesale of hardware, plumbing and heating equipment and supplies (SIC 46740); Retail sale of electrical household appliances in specialised stores (SIC 47540); Residents property management (SIC 98000).
How old is A T Heating Modules Ltd?
A T Heating Modules Ltd was incorporated on 19 July 2017, 9 years ago.
What is the penalty if A T Heating Modules 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 T Heating Modules 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.