- Companies
- Plumbers and heating engineers
- Grimsby
- Atg Building Ltd
Atg Building Ltd
- Company number
- 14683416
- Incorporated
- 22 Feb 20233 years trading
- Registered office
- 41 Garrick Lane, New Waltham, Grimsby, DN36 4WD
- Nature of business
- Plumbing, heat and air-conditioning installation; Joinery installation; Other building completion and finishing
Atg Building Ltd is a 3-year-old private limited company registered in Grimsby, company number 14683416, one of 83 plumbing and heating companies in Grimsby. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £8,619 (-50.8%) on the year before, to £8,362.
- Current assets of £2,808 against £7,958 owed within a year: 0.4 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £8,362 | £2,808 | £7,958 | 1 | |
| 29 Feb 2024 | £17K | £3,290 | £4,092 | 1 |
Where Atg Building Ltd is registered
The registered office is in Grimsby (DN36), in the North East Lincolnshire local authority area, Yorkshire and The Humber. Show DN36 4WD on a map.
Other trade companies in DN36
- Net Zero Renewables Ltd LtdBuilders
- Ultimate Civils LimitedCivil engineering
- K G Collins Roofing LtdRoofers
- Coops Autoneering LtdMechanics and garages
- Ibuild Projects LimitedProperty developers
- Humberside Power LimitedElectricians
- Home Fresh Property Maintenance LimitedFacilities management
- Home Fresh Professional Cleaning LimitedCleaning companies
What happens if Atg Building 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 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
- 14683416
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 February 2023 (3 years ago)
- Registered office
- 41 Garrick Lane, New Waltham, Grimsby, DN36 4WD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Joinery installation (SIC 43320)
Other building completion and finishing (SIC 43390) - Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 21 February 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 in Grimsby
Other active plumbing and heating companies registered in Grimsby.
- Banks Refrigeration Services Limited1982
- Bca Plumbing Heating Gas Services Ltd2024
- Beeson Plumbing & Heating Limited2009
- Boiler-Tech Gas Services Limited2019
- Boiler-Tech Installations Limited2020
- Bramwell's Plumbing and Heating Limited2025
- Brookes Refrigeration & Air Conditioning Limited2010
- C.A. Norman Plumbing Limited2003
All plumbing and heating companies in Grimsby · All trades in Grimsby · Plumbers and heating engineers across the UK
Frequently asked questions
When are Atg Building Ltd's accounts due?
Atg Building Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Atg Building Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Atg Building Ltd still trading?
Atg Building 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 Atg Building Ltd do?
Atg Building Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Joinery installation (SIC 43320); Other building completion and finishing (SIC 43390).
How old is Atg Building Ltd?
Atg Building Ltd was incorporated on 22 February 2023, 3 years ago.
What is the penalty if Atg Building 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 Atg Building 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.