- Companies
- Plumbers and heating engineers
- Doncaster
- Lock and Flow Plumbing and Heating Ltd
Lock and Flow Plumbing and Heating Ltd
- Company number
- 16456555
- Incorporated
- 19 May 20251 year trading
- Registered office
- 3 Railway Court, Ten Pound Walk, Doncaster, South Yorkshire, DN4 5FB
- Nature of business
- Plumbing, heat and air-conditioning installation
Lock and Flow Plumbing and Heating Ltd is a 1-year-old private limited company registered in Doncaster, company number 16456555, one of 150 plumbing and heating companies in Doncaster. Its next accounts are due at Companies House on 19 February 2027, and its first CT600 is due at HMRC on 18 May 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 Lock and Flow Plumbing and Heating Ltd is registered
The registered office is in Doncaster (DN4), in the Doncaster local authority area, Yorkshire and The Humber. Show DN4 5FB 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
Also registered at this address
16 other companies use the same registered office as Lock and Flow Plumbing and Heating Ltd.
- Amp5 Contracts LimitedElectricians
- Aqua Chem Environmental LtdCleaning companies
- Ardpoll Installation Services LimitedElectricians
- C B Building Contractors LimitedProperty developers
- CGP Commercials LimitedMotor traders
- CRC Properties LimitedProperty developers
- E H Homes LimitedBuilders
- Gordons Refinishing Services LtdMotor traders
- Invest Yorkshire LimitedProperty developers
- Ivoltz LimitedCivil engineering
- Kes Air Technology LimitedMotor traders
- P H M & C E Consultancy LimitedCivil engineering
- Pcio LimitedInstallers
- Plumbgroup-UK LtdPlumbers and heating engineers
- R M Poole Decorating LimitedPainters and decorators
- Vectis Infrastructures LtdPlumbers and heating engineers
What happens if Lock and Flow Plumbing and Heating 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 19 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 Feb 2027 to 19 Mar 2027 | £150 |
| 1 to 3 months late | 20 Mar 2027 to 19 May 2027 | £375 |
| 3 to 6 months late | 20 May 2027 to 19 Aug 2027 | £750 |
| More than 6 months late | From 20 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 16456555
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 May 2025 (1 year ago)
- Registered office
- 3 Railway Court, Ten Pound Walk, Doncaster, South Yorkshire, DN4 5FB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 18 May 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 Doncaster
Other active plumbing and heating companies registered in Doncaster.
- Lowfield Plumbing and Heating Ltd2021
- LSK Plumbing and Heating Ltd2026
- Lumia Property Services Ltd2022
- M. J. Harvey Limited2005
- M.E.E.P Installations Ltd2023
- Maintenance Plumbing and Gas Ltd2016
- Martec Cooling Ltd2026
- Masons Plumbing & Heating Contractors Ltd2019
All plumbing and heating companies in Doncaster · All trades in Doncaster · Plumbers and heating engineers across the UK
Frequently asked questions
When are Lock and Flow Plumbing and Heating Ltd's accounts due?
Lock and Flow Plumbing and Heating Ltd's next accounts are due at Companies House by 19 February 2027 (in 129 days), covering the period to 31 May 2026.
When is Lock and Flow Plumbing and Heating 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 18 May 2026, due by 18 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Lock and Flow Plumbing and Heating Ltd still trading?
Lock and Flow Plumbing and Heating 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 Lock and Flow Plumbing and Heating Ltd do?
Lock and Flow Plumbing and Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Lock and Flow Plumbing and Heating Ltd?
Lock and Flow Plumbing and Heating Ltd was incorporated on 19 May 2025, 1 year ago.
What is the penalty if Lock and Flow Plumbing and Heating 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 Lock and Flow Plumbing and Heating 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.