- Companies
- Plumbers and heating engineers
- Manchester
- GB Mechanical Ltd
GB Mechanical Ltd
- Company number
- 17414085
- Incorporated
- 21 Aug 2026
- Registered office
- 230 ST. Marys Road, Manchester, M40 0AY
- Nature of business
- Plumbing, heat and air-conditioning installation
GB Mechanical Ltd is a newly incorporated private limited company registered in Manchester, company number 17414085, one of 361 plumbing and heating companies in Manchester. Its next accounts are due at Companies House on 21 May 2028, and its first CT600 is due at HMRC on 20 August 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where GB Mechanical Ltd is registered
The registered office is in Manchester (M40), in the Manchester local authority area, North West. Show M40 0AY on a map.
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What happens if GB Mechanical 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 21 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 22 May 2028 to 21 Jun 2028 | £150 |
| 1 to 3 months late | 22 Jun 2028 to 21 Aug 2028 | £375 |
| 3 to 6 months late | 22 Aug 2028 to 21 Nov 2028 | £750 |
| More than 6 months late | From 22 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2029 | 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
- 17414085
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2026
- Registered office
- 230 ST. Marys Road, Manchester, M40 0AY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
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 Manchester
Other active plumbing and heating companies registered in Manchester.
- Gent Energy Limited2015
- Gent Limited2007
- Glow Gas Ltd2026
- Glow Heating Ltd2026
- Goldenflow Plumbing Ltd2024
- Gortons Heating Contractors Ltd2023
- Grade A Tiling Ltd2022
- Grant Point Energy Ltd2026
All plumbing and heating companies in Manchester · All trades in Manchester · Plumbers and heating engineers across the UK
Frequently asked questions
When are GB Mechanical Ltd's accounts due?
GB Mechanical Ltd's next accounts are due at Companies House by 21 May 2028 (in 586 days), covering the period to 31 August 2027.
When is GB Mechanical 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 20 August 2027, due by 20 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is GB Mechanical Ltd still trading?
GB Mechanical 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 GB Mechanical Ltd do?
GB Mechanical Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is GB Mechanical Ltd?
GB Mechanical Ltd was incorporated on 21 August 2026, less than a year ago.
What is the penalty if GB Mechanical 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 GB Mechanical 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.