- Companies
- Plumbers and heating engineers
- Norwich
- JL Cook Holdings Ltd
JL Cook Holdings Ltd
- Company number
- 14736289
- Incorporated
- 17 Mar 20233 years trading
- Registered office
- Queens Head House the Street, Acle, Norwich, Norfolk, NR13 3DY
- Nature of business
- Plumbing, heat and air-conditioning installation
JL Cook Holdings Ltd is a 3-year-old private limited company registered in Norwich, company number 14736289, one of 252 plumbing and heating companies in Norwich. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 £7,841 (-148.3%) on the year before, to -£2,553.
- Current assets of £2,953 against £12K owed within a year: 0.2 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£2,553 | £2,953 | £12K | 2 | |
| 31 Mar 2024 | £5,288 | £4,386 | £7,640 | 2 |
Where JL Cook Holdings Ltd is registered
The registered office is in Norwich (NR13), in the Broadland local authority area, East of England. Show NR13 3DY on a map.
Other trade companies in NR13
- Istar Engineering LtdElectricians
- Smith Automotive Capital LimitedMotor traders
- Kevic Ac LimitedPlumbers and heating engineers
- CP Electrical Contractors LtdElectricians
- Norfolk Driveway Cleaning LtdCleaning companies
- NMR Cars LtdMotor traders
- Skyline Decorating Services LtdPainters and decorators
- Finch Air Conditioning LtdPlumbers and heating engineers
Also registered at this address
8 other companies use the same registered office as JL Cook Holdings Ltd.
- E.M.E.T Construction LimitedProperty developers
- Exall Building Company LimitedCivil engineering
- Heath Farm Barns Rollesby LimitedFacilities management
- J&SP Holdings LimitedProperty developers
- Masterseal LimitedFinishing trades
- MG Plumbing & Heating (Norfolk) LtdPlumbers and heating engineers
- Norfolk Construction Services LimitedProperty developers
- Norfolk Garden Services LimitedLandscapers and gardeners
What happens if JL Cook Holdings 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 14736289
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 March 2023 (3 years ago)
- Registered office
- Queens Head House the Street, Acle, Norwich, Norfolk, NR13 3DY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 16 March 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 Norwich
Other active plumbing and heating companies registered in Norwich.
- JLB Plumbing and Heating Services Ltd2023
- John Moroney Limited2005
- John Sadler Plumbing & Heating Ltd2015
- JRW Heating Solutions Ltd2025
- Junction 5 Plumbing & Heating Limited2009
- JWD Plumbing & Heating (Norfolk) Ltd2021
- K&A Plumber's Ltd2025
- KCM Plumbing Limited2008
All plumbing and heating companies in Norwich · All trades in Norwich · Plumbers and heating engineers across the UK
Frequently asked questions
When are JL Cook Holdings Ltd's accounts due?
JL Cook Holdings Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is JL Cook Holdings Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is JL Cook Holdings Ltd still trading?
JL Cook Holdings 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 JL Cook Holdings Ltd do?
JL Cook Holdings Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is JL Cook Holdings Ltd?
JL Cook Holdings Ltd was incorporated on 17 March 2023, 3 years ago.
What is the penalty if JL Cook Holdings 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 JL Cook Holdings 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.