- Companies
- Plumbers and heating engineers
- Waltham Cross
- Optimal Plumbing Limited
Optimal Plumbing Limited
- Company number
- 17309584
- Incorporated
- 30 Jun 2026
- Registered office
- Blackbird Cottage Brookfield Lane West, Cheshunt, Waltham Cross, EN8 0QY
- Nature of business
- Plumbing, heat and air-conditioning installation
Optimal Plumbing Limited is a newly incorporated private limited company registered in Waltham Cross, company number 17309584, one of 63 plumbing and heating companies in Waltham Cross. Its next accounts are due at Companies House on 31 March 2028, and its first CT600 is due at HMRC on 29 June 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?
File the first 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 Optimal Plumbing LimitedOr 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.
Where Optimal Plumbing Limited is registered
The registered office is in Waltham Cross (EN8), in the Broxbourne local authority area, East of England. Show EN8 0QY on a map.
Other trade companies in EN8
- Elite Interior Finishes LtdInstallers
- Panalux Maintenance LimitedBuilders
- Auremont Construction LtdBuilders
- Toptier Cleaning Services LtdCleaning companies
- Olive Cooper Construction LtdBuilders
- Ar Projects & Developments LtdBuilders
- CTC Property Maintenance LimitedFinishing trades
- Nuto Electrical LtdElectricians
What happens if Optimal Plumbing 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 31 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2028 to 30 Apr 2028 | £150 |
| 1 to 3 months late | 1 May 2028 to 30 Jun 2028 | £375 |
| 3 to 6 months late | 1 Jul 2028 to 30 Sep 2028 | £750 |
| More than 6 months late | From 1 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 17309584
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 June 2026
- Registered office
- Blackbird Cottage Brookfield Lane West, Cheshunt, Waltham Cross, EN8 0QY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (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 Waltham Cross
Other active plumbing and heating companies registered in Waltham Cross.
- Peter Nay Heating Limited2009
- Piercegas Engineering Limited2025
- Pipin' Hot Ltd2026
- Plumb and Drain Company Ltd2024
- Plumbing & Heating 24/7 Ltd2017
- PM Heating & General Maintenance Ltd2010
- Prime Property Repairs Ltd2026
- R C Gas & Heating Ltd2023
All plumbing and heating companies in Waltham Cross · All trades in Waltham Cross · Plumbers and heating engineers across the UK
Frequently asked questions
When are Optimal Plumbing Limited's accounts due?
Optimal Plumbing Limited's next accounts are due at Companies House by 31 March 2028 (in 535 days), covering the period to 30 June 2027.
When is Optimal Plumbing 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 29 June 2027, due by 29 June 2028, and one for the period to 30 June 2027, due by 30 June 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Optimal Plumbing Limited still trading?
Optimal Plumbing 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 Optimal Plumbing Limited do?
Optimal Plumbing Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Optimal Plumbing Limited?
Optimal Plumbing Limited was incorporated on 30 June 2026, less than a year ago.
What is the penalty if Optimal Plumbing 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 Optimal Plumbing 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.