- Companies
- Plumbers and heating engineers
- Porth
- Dymmock Heating Ltd
Dymmock Heating Ltd
- Company number
- 11608086
- Incorporated
- 6 Oct 20188 years trading
- Registered office
- 32 Coronation Road, Gilfach Goch, Porth, CF39 8RE
- Nature of business
- Plumbing, heat and air-conditioning installation
Dymmock Heating Ltd is a 8-year-old private limited company registered in Porth, company number 11608086, one of 5 plumbing and heating companies in Porth. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
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 Dymmock Heating 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 down £807 (-6.7%) on the year before, to £11K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £11K against £1,715 owed within a year: 6.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £11K | £11K | £1,715 | 2 | |
| 31 Oct 2023 | £12K | £15K | £5,664 | 2 | |
| 31 Oct 2022 | £10K | £14K | £5,973 | 2 | |
| 31 Oct 2021 | £7,422 | £8,960 | £5,075 | 2 | |
| 31 Oct 2020 | £326 | £652 | £1,232 | 1 | |
| 31 Oct 2019 | £272 | £610 | 2 |
Where Dymmock Heating Ltd is registered
The registered office is in Porth (CF39), in the Bridgend local authority area, Wales. Show CF39 8RE on a map.
Other trade companies in CF39
- Nvme Detailing LimitedMechanics and garages
- Choctar LimitedBuilders
- J Cantwell Surfacing & Contracting LtdCivil engineering
- Ok Rail LtdCivil engineering
- Porth Ceilings & Interiors LtdFinishing trades
- Wydex LtdBuilders
- Time Lec Services LtdElectricians
- Arb-Scape Tree Surgery & Landscaping LtdLandscapers and gardeners
What happens if Dymmock 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 11608086
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 October 2018 (8 years ago)
- Registered office
- 32 Coronation Road, Gilfach Goch, Porth, CF39 8RE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 5 October 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 Porth
Other active plumbing and heating companies registered in Porth.
- James Domestic Gas Services Ltd2021
- MJB Servicing Ltd2020
- A & T Bathrooms Ltd2023
- Blue Flame Gas Solutions Limited2015
All plumbing and heating companies in Porth · All trades in Porth · Plumbers and heating engineers across the UK
Frequently asked questions
When are Dymmock Heating Ltd's accounts due?
Dymmock Heating Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Dymmock 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 31 October 2025, due by 31 October 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Dymmock Heating Ltd still trading?
Dymmock 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 Dymmock Heating Ltd do?
Dymmock Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Dymmock Heating Ltd?
Dymmock Heating Ltd was incorporated on 6 October 2018, 8 years ago.
What is the penalty if Dymmock 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 Dymmock 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.