- Companies
- Electricians
- Harrow
- MML Build Limited
MML Build Limited
- Company number
- 05063557
- Incorporated
- 4 Mar 200422 years trading
- Registered office
- 26 Bessborough Road, Harrow, HA1 3DL
- Nature of business
- Electrical installation; Joinery installation; Other building completion and finishing; Roofing activities
MML Build Limited is a 22-year-old private limited company registered in Harrow, company number 05063557, one of 200 electrical contractors in Harrow. 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 up £190 (+8.9%) on the year before, to -£1,938.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £51K against £61K owed within a year: 0.8 times cover.
- 1 employee on average during the year.
- 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 | -£1,938 | £23K | £51K | £61K | 1 |
| 31 Mar 2024 | -£2,128 | £36K | £91K | £102K | 1 |
| 31 Mar 2023 | £1,711 | £53K | £77K | £87K | 1 |
| 31 Mar 2022 | £16K | £61K | £70K | 1 | |
| 31 Mar 2021 | £48K | £69K | £72K | £36K | 1 |
| 31 Mar 2020 | £62K | £43K | £66K | £18K | 1 |
| 31 Mar 2019 | £57K | £68K | £69K | £18K | 1 |
| 31 Mar 2018 | £19K | £28K | £28K | £15K | 1 |
| 31 Mar 2017 | £23K | £14K | £34K | £11K | |
| 31 Mar 2016 | £15K | £4,640 | £26K | £10K |
Where MML Build Limited is registered
The registered office is in Harrow (HA1), in the Harrow local authority area, London. Show HA1 3DL on a map.
Other trade companies in HA1
- Cabos Electrical LimitedElectricians
- Mia Maria Services LtdCleaning companies
- Ac Operations LtdScaffolders
- Verde Masters LtdLandscapers and gardeners
- Omega Works Group LtdLandscapers and gardeners
- Call 'Em LimitedPlumbers and heating engineers
- Swan Roofing Services LimitedRoofers
- DRV Property Solutions LtdPainters and decorators
Also registered at this address
13 other companies use the same registered office as MML Build Limited.
- Bennetts Interiors LimitedSpecialist contractors
- BJS Gardens LtdLandscapers and gardeners
- Building Smart Solutions LtdFinishing trades
- D3Lux LtdBuilders
- G&A Facades LtdGlaziers
- Harry's Window Cleaning LtdCleaning companies
- I&F LtdSpecialist contractors
- KGMG Services LimitedSpecialist contractors
- Property Maintenance Solution LtdPlasterers
- PZ Construction Design LtdSpecialist contractors
- Stefans Plastering LtdPlasterers
- Tirol LtdMachinery repair and installation
- TJS Building Services LimitedFinishing trades
What happens if MML Build 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 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
- 05063557
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 March 2004 (22 years ago)
- Registered office
- 26 Bessborough Road, Harrow, HA1 3DL
- Nature of business
- Electrical installation (SIC 43210)
Joinery installation (SIC 43320)
Other building completion and finishing (SIC 43390)
Roofing activities (SIC 43910) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 1 December 2025
- Previous names
- Manley Maintenance Limited (until 1 Dec 2022)
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Harrow
Other active electrical contractors registered in Harrow.
- MNC Eco Electrical Services Ltd2022
- Morrissey Electrical Limited2019
- MS Electricity Services Ltd2025
- Mullarkey Contractors Ltd2015
- NCT Electrical Ltd2024
- Neon Systems Ltd2026
- Newage Builders Ltd2022
- Nozalari Limited2026
All electrical contractors in Harrow · All trades in Harrow · Electricians across the UK
Frequently asked questions
When are MML Build Limited's accounts due?
MML Build Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is MML Build Limited'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 MML Build Limited still trading?
MML Build 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 MML Build Limited do?
MML Build Limited is registered under Electrical installation (SIC 43210); Joinery installation (SIC 43320); Other building completion and finishing (SIC 43390); Roofing activities (SIC 43910).
How old is MML Build Limited?
MML Build Limited was incorporated on 4 March 2004, 22 years ago.
What is the penalty if MML Build 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 MML Build 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.