MCK Gas Ltd
- Company number
- 11811744
- Incorporated
- 7 Feb 20197 years trading
- Registered office
- C/O Xerxes Associates LLP, 29 Throgmorton Street, London, EC2N 2AT
- Nature of business
- Plumbing, heat and air-conditioning installation
MCK Gas Ltd is a 7-year-old private limited company registered in London, company number 11811744, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 up £7,315 (+10.1%) on the year before, to £80K.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- Current assets of £92K against £12K owed within a year: 8.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £80K | £5,898 | £92K | £12K | 2 |
| 28 Feb 2024 | £73K | £15K | £94K | £17K | 2 |
| 28 Feb 2023 | £57K | £86K | £17K | 2 | |
| 28 Feb 2022 | £27K | £19K | £76K | £36K | 1 |
| 28 Feb 2021 | £15K | £15K | £51K | £17K | 1 |
| 28 Feb 2020 | £5,253 | £9,759 | £6,078 | 1 |
Where MCK Gas Ltd is registered
The registered office is in London (EC2N), in the City of London local authority area, London. Show EC2N 2AT on a map.
Other trade companies in EC2N
- Lea & Nob Solutions LtdSpecialist contractors
- Sunshine Cleaning Services LtdCleaning companies
- RC Groundwork and Landscaping LtdBuilders
- Aeterna Ventures LimitedProperty developers
- Statkraft Epc Solutions UK LimitedSpecialist contractors
- Vertexone Construction LimitedBuilders
- Virol Global Trade LtdMotor traders
- CGL Projects LtdBuilders
Also registered at this address
11 other companies use the same registered office as MCK Gas Ltd.
- A & G Blinds LimitedFloor and wall tilers
- Blue Prop LtdProperty developers
- GR8 Cleaning Services LtdCleaning companies
- JTM Maintenance LtdPlumbers and heating engineers
- London Provincial LimitedProperty developers
- Magprop LtdProperty developers
- P.C. Tustin & Company LimitedProperty developers
- Robyn’S Redecs LimitedPainters and decorators
- Ryanheath Properties LimitedProperty developers
- Shareduty LimitedProperty developers
- Star Glazing Improvements LtdMachinery repair and installation
What happens if MCK Gas 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 11811744
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 February 2019 (7 years ago)
- Registered office
- C/O Xerxes Associates LLP, 29 Throgmorton Street, London, EC2N 2AT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 6 February 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 London
Other active plumbing and heating companies registered in London.
- MD Gas Solutions Ltd2021
- MD Plumbing Services Ltd2022
- MDM Plumbing & Heating Limited1999
- Mechanical Services Installations Limited1972
- Mehr Cool Refrigeration & Air Conditioning Ltd2024
- Mekanik Plumbing and Heating Ltd2025
- Menners Plumbing & Heating Ltd2026
- Merlin Gas and Property Services Ltd2021
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are MCK Gas Ltd's accounts due?
MCK Gas Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is MCK Gas Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is MCK Gas Ltd still trading?
MCK Gas 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 MCK Gas Ltd do?
MCK Gas Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MCK Gas Ltd?
MCK Gas Ltd was incorporated on 7 February 2019, 7 years ago.
What is the penalty if MCK Gas 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 MCK Gas 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.