- Companies
- Plumbers and heating engineers
- London
- Mybuilder Alex Ltd
Mybuilder Alex Ltd
- Company number
- 15711419
- Incorporated
- 9 May 20242 years trading
- Registered office
- 3RD Floor, 86-90, Paul Street, London, EC2A 4NE
- Nature of business
- Plumbing, heat and air-conditioning installation; Floor and wall covering; Painting; Other building completion and finishing
Mybuilder Alex Ltd is a 2-year-old private limited company registered in London, company number 15711419, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 May 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Mybuilder Alex Ltd is registered
The registered office is in London (EC2A), in the Hackney local authority area, London. Show EC2A 4NE on a map.
Other trade companies in EC2A
- Simlan Management LtdCleaning companies
- Renova Secure LtdBuilders
- Auraglasspartitions LtdGlaziers
- A2D Professional Cleaning LtdCleaning companies
- Matson Co. LtdProperty developers
- Paint Hub LimitedMechanics and garages
- SJK Construction & Management LtdBuilders
- Cenlora Cleaning Group LtdCleaning companies
Shared registered office
1,581 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 Mybuilder Alex 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 15711419
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 May 2024 (2 years ago)
- Registered office
- 3RD Floor, 86-90, Paul Street, London, EC2A 4NE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Floor and wall covering (SIC 43330)
Painting (SIC 43341)
Other building completion and finishing (SIC 43390) - Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 8 May 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.
- Mycond Limited2014
- Mycroft Heating & Plumbing Limited2013
- Mziu Ltd2014
- N E P & H Limited2023
- N Round Ltd2026
- N.Y. Maintenance Limited2001
- N1 Group Ltd2025
- N1 Plumbing and Drainage Services Ltd2026
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mybuilder Alex Ltd's accounts due?
Mybuilder Alex Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Mybuilder Alex Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Mybuilder Alex Ltd still trading?
Mybuilder Alex 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 Mybuilder Alex Ltd do?
Mybuilder Alex Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Floor and wall covering (SIC 43330); Painting (SIC 43341); Other building completion and finishing (SIC 43390).
How old is Mybuilder Alex Ltd?
Mybuilder Alex Ltd was incorporated on 9 May 2024, 2 years ago.
What is the penalty if Mybuilder Alex 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 Mybuilder Alex 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.