- Companies
- Plumbers and heating engineers
- St Ives
- Andrew Mock Ltd
Andrew Mock Ltd
- Company number
- 12955235
- Incorporated
- 15 Oct 20205 years trading
- Registered office
- The Old School, The Stennack, St Ives, Cornwall, TR26 1QU
- Nature of business
- Plumbing, heat and air-conditioning installation
Andrew Mock Ltd is a 5-year-old private limited company registered in St Ives, company number 12955235, one of 11 plumbing and heating companies in St Ives. 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 £1,354 (-88.3%) on the year before, to £179.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £12K against £15K owed within a year: 0.8 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £179 | £181 | £12K | £15K | 1 |
| 31 Mar 2024 | £1,533 | £999 | £11K | £11K | 2 |
| 31 Mar 2023 | -£72 | £2,856 | £3,977 | £5,791 | 2 |
| 31 Mar 2022 | £10K | £734 | £12K | £3,875 | 2 |
Where Andrew Mock Ltd is registered
The registered office is in St Ives (TR26), in the Cornwall local authority area, South West. Show TR26 1QU on a map.
Other trade companies in TR26
- Monoplace LtdProperty developers
- Monotypic Assets LtdBuilders
- Maid by the Sea LtdCleaning companies
- Carl Potter Wilson LtdProperty developers
- Groundwake LtdCivil engineering
- L&M Maintenance LtdMachinery repair and installation
- Sublime Precision LtdMachinery repair and installation
- Foxton Group LtdBuilders
Shared registered office
38 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Andrew Mock 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
- 12955235
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 October 2020 (5 years ago)
- Registered office
- The Old School, The Stennack, St Ives, Cornwall, TR26 1QU
- 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 2025
- Last confirmation statement
- 15 October 2025
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 St Ives
Other active plumbing and heating companies registered in St Ives.
- Aqua Earth Ltd2013
- BSL Heating & Plumbing Ltd2017
- Buckingham Plumbing & Heating Limited2019
- D Finkle Gas Services Ltd2005
- Gary Murphy Plumbing and Heating Limited2022
- Graham Allchin Plumbing & Heating Ltd2011
- KLB Plumbing and Heating Ltd2022
- MG Gas Specialists Limited2003
All plumbing and heating companies in St Ives · All trades in St Ives · Plumbers and heating engineers across the UK
Frequently asked questions
When are Andrew Mock Ltd's accounts due?
Andrew Mock 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 Andrew Mock 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 Andrew Mock Ltd still trading?
Andrew Mock 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 Andrew Mock Ltd do?
Andrew Mock Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Andrew Mock Ltd?
Andrew Mock Ltd was incorporated on 15 October 2020, 5 years ago.
What is the penalty if Andrew Mock 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 Andrew Mock 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.