- Companies
- Plumbers and heating engineers
- London
- Smart Tech Ac Limited
Smart Tech Ac Limited
- Company number
- 12767303
- Incorporated
- 24 Jul 20206 years trading
- Registered office
- 167-169 Great Portland Street, 5TH Floor, London, W1W 5PF
- Nature of business
- Plumbing, heat and air-conditioning installation
Smart Tech Ac Limited is a 6-year-old private limited company registered in London, company number 12767303, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £18K (+30.5%) on the year before, to £78K.
- Net assets rose in 4 of 4 year-on-year comparisons on record.
- Current assets of £111K against £42K owed within a year: 2.6 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £78K | £42K | £111K | £42K | 2 |
| 31 Jul 2024 | £60K | £17K | £75K | £27K | 1 |
| 31 Jul 2023 | £23K | £5,937 | £19K | £12K | 1 |
| 31 Jul 2022 | £2,390 | £4,690 | £19K | £24K | 0 |
| 31 Jul 2021 | £1 |
Who runs and owns Smart Tech Ac Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| K*** P*** | Director | Jul 2020 |
Person with significant control
Where Smart Tech Ac Limited is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5PF on a map.
Other trade companies in W1W
- Civaris LtdSpecialist contractors
- R&R Construction Group LtdBuilders
- Aurum Cooling LtdPlumbers and heating engineers
- Steam Wood Stone LtdFinishing trades
- Hau Developments LimitedProperty developers
- Group Atlas Financial 83 LtdPainters and decorators
- Energy Reward LtdMotor traders
- Holly’S Housekeeping LtdCleaning companies
Shared registered office
1,494 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 Smart Tech Ac 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 12767303
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 July 2020 (6 years ago)
- Registered office
- 167-169 Great Portland Street, 5TH Floor, London, W1W 5PF
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 23 July 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.
- Smartz Global Ltd2025
- SMH Gas Services Ltd2020
- Smith Adaptations NW Limited2025
- Smith Mechanical Ltd2026
- Smith Plumbing, Heating & Heatpumps Ltd2026
- SMT Plumbing & Heating Ltd2016
- Snap Fix Plumbing Ltd2025
- Snap Plumbing & Heating Ltd2023
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Smart Tech Ac Limited's accounts due?
Smart Tech Ac Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Smart Tech Ac Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Smart Tech Ac Limited still trading?
Smart Tech Ac 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 Smart Tech Ac Limited do?
Smart Tech Ac Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Smart Tech Ac Limited?
Smart Tech Ac Limited was incorporated on 24 July 2020, 6 years ago.
Who runs Smart Tech Ac Limited?
Smart Tech Ac Limited has 1 active director, the longest-serving appointed in Jul 2020. Their names and service addresses are on the Companies House register.
Who owns Smart Tech Ac Limited?
One person or company has significant control of Smart Tech Ac Limited: an individual (owns 75% or more of the shares).
What is the penalty if Smart Tech Ac 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 Smart Tech Ac 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.