- Companies
- Plumbers and heating engineers
- Radlett
- Dimond Plumbing Ltd
Dimond Plumbing Ltd
- Company number
- 06950772
- Incorporated
- 2 Jul 200917 years trading
- Registered office
- 49 the Crosspath, Radlett, Hertfordshire, WD7 8HP
- Nature of business
- Plumbing, heat and air-conditioning installation
Dimond Plumbing Ltd is a 17-year-old private limited company registered in Radlett, company number 06950772, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 Dimond Plumbing 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 up £7,350 (+108.2%) on the year before, to £557.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £14K against £15K owed within a year: 0.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £557 | £14K | £15K | 1 | |
| 31 Mar 2025 | -£6,793 | £0 | £7,956 | £17K | 1 |
| 31 Mar 2024 | -£2,234 | £4,246 | £36K | £42K | 1 |
| 31 Mar 2023 | £2,261 | £19K | £19K | 1 | |
| 31 Mar 2022 | £1,061 | £37K | £35K | 1 | |
| 31 Mar 2021 | £16K | £10K | £24K | 1 | |
| 31 Mar 2020 | £3,912 | £12K | £13K | 1 | |
| 31 Mar 2019 | £1,644 | £20K | £14K | ||
| 31 Mar 2018 | £722 | £17K | £19K | ||
| 31 Mar 2017 | £1,107 | £12K | £13K |
Where Dimond Plumbing Ltd is registered
The registered office is in Radlett (WD7), in the Hertsmere local authority area, East of England. Show WD7 8HP on a map.
Other trade companies in WD7
- Love My Cleaner Leighton Buzzard LtdCleaning companies
- Hilfield LimitedProperty developers
- Meranda Projects LimitedFinishing trades
- Parratt Electrical Services LtdElectricians
- Shaws Water Group LtdCivil engineering
- Fresh Form LtdCleaning companies
- Hollobon LimitedPainters and decorators
- Scleaningservices LtdCleaning companies
What happens if Dimond Plumbing 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 06950772
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 July 2009 (17 years ago)
- Registered office
- 49 the Crosspath, Radlett, Hertfordshire, WD7 8HP
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 23 June 2026
- Previous names
- M.D.Gas Limited (until 14 Jun 2016)
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 Radlett
Other active plumbing and heating companies registered in Radlett.
All plumbing and heating companies in Radlett · All trades in Radlett · Plumbers and heating engineers across the UK
Frequently asked questions
When are Dimond Plumbing Ltd's accounts due?
Dimond Plumbing Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Dimond Plumbing Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Dimond Plumbing Ltd still trading?
Dimond Plumbing 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 Dimond Plumbing Ltd do?
Dimond Plumbing Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Dimond Plumbing Ltd?
Dimond Plumbing Ltd was incorporated on 2 July 2009, 17 years ago.
What is the penalty if Dimond Plumbing 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 Dimond Plumbing 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.