- Companies
- Plumbers and heating engineers
- Sidcup
- HBJ Mechanical Services Limited
HBJ Mechanical Services Limited
- Company number
- 16217110
- Incorporated
- 29 Jan 20251 year trading
- Registered office
- 12 Hatherley Road, Sidcup, DA14 4DT
- Nature of business
- Plumbing, heat and air-conditioning installation
HBJ Mechanical Services Limited is a 1-year-old private limited company registered in Sidcup, company number 16217110, one of 101 plumbing and heating companies in Sidcup. Its next accounts are due at Companies House on 29 October 2026, and its first CT600 is due at HMRC on 28 January 2027.
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.
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Where HBJ Mechanical Services Limited is registered
The registered office is in Sidcup (DA14), in the Bexley local authority area, London. Show DA14 4DT on a map.
Other trade companies in DA14
- Evlor LtdElectricians
- Pfe Services LimitedElectricians
- CJM Property Services LimitedFinishing trades
- Top Local Trader LtdBuilders
- Bassett Electrical Group LimitedElectricians
- Flatline Flooring LtdFloor and wall tilers
- LDT Service's LimitedScaffolders
- Old Maidstone Road Hand Car Wash LtdMechanics and garages
Shared registered office
427 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if HBJ Mechanical Services Limited 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 29 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Oct 2026 to 29 Nov 2026 | £150 |
| 1 to 3 months late | 30 Nov 2026 to 29 Jan 2027 | £375 |
| 3 to 6 months late | 30 Jan 2027 to 29 Apr 2027 | £750 |
| More than 6 months late | From 30 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 16217110
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 January 2025 (1 year ago)
- Registered office
- 12 Hatherley Road, Sidcup, DA14 4DT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 10 November 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 in Sidcup
Other active plumbing and heating companies registered in Sidcup.
- Heat Cover Limited1994
- Heat Pump Group Limited2024
- Henri-Taylor Heating Solutions Limited2019
- Heritage Gas Services Ltd2013
- HH Climate Solutions Ltd2024
- HM Plumbing & Heating Limited2018
- HVAC Testing and Balancing Limited2023
- Icf Plumbing and Heating Limited2012
All plumbing and heating companies in Sidcup · All trades in Sidcup · Plumbers and heating engineers across the UK
Frequently asked questions
When are HBJ Mechanical Services Limited's accounts due?
HBJ Mechanical Services Limited's next accounts are due at Companies House by 29 October 2026 (in 16 days), covering the period to 30 April 2026.
When is HBJ Mechanical Services Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 28 January 2026, due by 28 January 2027, and one for the period to 30 April 2026, due by 30 April 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is HBJ Mechanical Services Limited still trading?
HBJ Mechanical Services Limited 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 HBJ Mechanical Services Limited do?
HBJ Mechanical Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is HBJ Mechanical Services Limited?
HBJ Mechanical Services Limited was incorporated on 29 January 2025, 1 year ago.
What is the penalty if HBJ Mechanical Services Limited 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 HBJ Mechanical Services Limited 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.