- Companies
- Plumbers and heating engineers
- Slough
- Smart Energy Aid Ltd
Smart Energy Aid Ltd
- Company number
- 16461628
- Incorporated
- 20 May 20251 year trading
- Registered office
- 23 Downs Road, Slough, SL3 7BZ
- Nature of business
- Plumbing, heat and air-conditioning installation; Other specialised construction activities n.e.c.; Sale of used cars and light motor vehicles; Advertising agencies
Smart Energy Aid Ltd is a 1-year-old private limited company registered in Slough, company number 16461628, one of 128 plumbing and heating companies in Slough. Its next accounts are due at Companies House on 20 February 2027, and its first CT600 is due at HMRC on 19 May 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Smart Energy Aid Ltd is registered
The registered office is in Slough (SL3), in the Slough local authority area, South East. Show SL3 7BZ on a map.
Other trade companies in SL3
- Tac Design & Build LtdFinishing trades
- G&S Formwork LtdBuilders
- Klenzo LtdCleaning companies
- West London Crown Construction LtdBuilders
- Dahlia Investment Group LimitedProperty developers
- Ekon Electrics LtdElectricians
- R&G Maintenance LtdCleaning companies
- Cornerstone Homes & Estates LtdProperty developers
What happens if Smart Energy Aid 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 20 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Feb 2027 to 20 Mar 2027 | £150 |
| 1 to 3 months late | 21 Mar 2027 to 20 May 2027 | £375 |
| 3 to 6 months late | 21 May 2027 to 20 Aug 2027 | £750 |
| More than 6 months late | From 21 Aug 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
- 16461628
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 May 2025 (1 year ago)
- Registered office
- 23 Downs Road, Slough, SL3 7BZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other specialised construction activities n.e.c. (SIC 43999)
Sale of used cars and light motor vehicles (SIC 45112)
Advertising agencies (SIC 73110) - Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 19 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 Slough
Other active plumbing and heating companies registered in Slough.
- SR Heating & Plumbing Ltd2012
- Staa Private Limited2020
- Tara Gas Heating Services Limited2013
- Thames Valley Facilities Ltd2021
- Thind Heating Services Ltd2022
- Total Heat Services Ltd2022
- Tru-Heat Limited2011
- Ultimate Design & Build Construction Limited2022
All plumbing and heating companies in Slough · All trades in Slough · Plumbers and heating engineers across the UK
Frequently asked questions
When are Smart Energy Aid Ltd's accounts due?
Smart Energy Aid Ltd's next accounts are due at Companies House by 20 February 2027 (in 130 days), covering the period to 31 May 2026.
When is Smart Energy Aid Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 19 May 2026, due by 19 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Smart Energy Aid Ltd still trading?
Smart Energy Aid 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 Smart Energy Aid Ltd do?
Smart Energy Aid Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other specialised construction activities n.e.c. (SIC 43999); Sale of used cars and light motor vehicles (SIC 45112); Advertising agencies (SIC 73110).
How old is Smart Energy Aid Ltd?
Smart Energy Aid Ltd was incorporated on 20 May 2025, 1 year ago.
What is the penalty if Smart Energy Aid 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 Smart Energy Aid 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.