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- Leakbusters Limited
Company profile · Plumbers and heating engineers
Leakbusters Limited
Leakbusters Limited is a 23-year-old private limited company registered in North Finchley, company number 04721297, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 29 December 2026, and the CT600 for the period to 29 March 2026 is due at HMRC on 29 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Leakbusters Limited over the years
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 £13K (+45.6%) on the year before, to -£15K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £351K against £397K owed within a year: 0.9 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£15K | £351K | £397K | 0 | |
| 31 Mar 2024 | -£28K | £143K | £188K | 3 | |
| 31 Mar 2023 | -£38K | £129K | £177K | 2 | |
| 31 Mar 2022 | -£41K | £126K | £177K | 3 | |
| 31 Mar 2021 | -£45K | £87K | £122K | 3 | |
| 31 Mar 2020 | -£68K | £101K | £181K | 3 | |
| 31 Mar 2019 | -£24K | £146K | £184K | ||
| 31 Mar 2018 | £1,118 | £111K | £126K | ||
| 31 Mar 2017 | £827 | £138K | £158K | ||
| 31 Mar 2016 | £3,217 | £11K | £130K | £150K |
Where Leakbusters Limited is registered
The registered office is in North Finchley (N12), in the Barnet local authority area, London. Show N12 0BT on a map.
Other trade companies in N12
- Sullivan Property and Maintenance LtdFacilities management
- Mael Property Services LtdFinishing trades
- Horizon Constructors LtdProperty developers
- Alfawine Group LimitedFinishing trades
- Sam Motors Group LimitedMotor traders
- Heating on Demand LtdPlumbers and heating engineers
- Premium Electrical LtdElectricians
- Amaiya Sparks LtdCleaning companies
Also registered at this address
7 other companies use the same registered office as Leakbusters Limited.
- Bear Cave LimitedProperty developers
- Build & Management LtdBuilders
- M.N.M. Building Contractors LimitedBuilders
- MDM Gearboxes LimitedMechanics and garages
- Nektous LtdPlumbers and heating engineers
- Robin James Builders LimitedFinishing trades
- ST. Edwards Property Co. LimitedProperty developers
What happens if Leakbusters 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 29 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Dec 2026 to 29 Jan 2027 | £150 |
| 1 to 3 months late | 30 Jan 2027 to 29 Mar 2027 | £375 |
| 3 to 6 months late | 30 Mar 2027 to 29 Jun 2027 | £750 |
| More than 6 months late | From 30 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Mar 2027 | £200 |
| 3 months late | 29 Jun 2027 | another £200 |
| 6 months late | 29 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 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
- 04721297
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 April 2003 (23 years ago)
- Registered office
- Galla House, 695 High Road, North Finchley, London, N12 0BT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 2 April 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
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
Other active plumbing and heating companies.
- R A Plumbing Services Limited2003
- Blue Flame Services Limited2003
- E.Reina Limited2003
- S. Philps Gas Services Ltd2003
- Aces Security & Electrical Ltd2003
- S. T. Plumbing and Heating Gas Specialists Limited2003
- Mick Smith Heating & Plumbing Ltd.2003
- C & S Chamberlain Limited2003
Plumbers and heating engineers across the UK
Frequently asked questions
When are Leakbusters Limited's accounts due?
Leakbusters Limited's next accounts are due at Companies House by 29 December 2026 (in 78 days), covering the period to 29 March 2026.
When is Leakbusters Limited's CT600 due?
The CT600 for the period to 29 March 2026 is due at HMRC by 29 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 December 2026.
Is Leakbusters Limited still trading?
Leakbusters 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 Leakbusters Limited do?
Leakbusters Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Leakbusters Limited?
Leakbusters Limited was incorporated on 2 April 2003, 23 years ago.
What is the penalty if Leakbusters 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 Leakbusters 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.