- Companies
- Builders
- Mountain Ash
- GSP Electricians Ltd
GSP Electricians Ltd
- Company number
- 13478126
- Incorporated
- 25 Jun 20215 years trading
- Registered office
- 19 Aberffrwd Road, Mountain Ash, CF45 4AR
- Nature of business
- Construction of domestic buildings; Electrical installation; Other construction installation; Other building completion and finishing
GSP Electricians Ltd is a 5-year-old private limited company registered in Mountain Ash, company number 13478126, one of 24 building contractors in Mountain Ash. 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 down £11K (-75.3%) on the year before, to -£26K.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £22K against £29K owed within a year: 0.8 times cover.
- 2 employees on average during the year.
- 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 Jul 2025 | -£26K | £18K | £22K | £29K | 2 |
| 31 Jul 2024 | -£15K | £3,852 | £19K | £51K | 2 |
| 31 Jul 2023 | -£22K | £4,982 | £12K | £44K | 2 |
| 30 Jun 2022 | £2 | £2 | 1 |
Where GSP Electricians Ltd is registered
The registered office is in Mountain Ash (CF45), in the Rhondda Cynon Taf local authority area, Wales. Show CF45 4AR on a map.
Other trade companies in CF45
- Pro Guard Home Improvements LtdRoofers
- Smiths Rendering & Resin LtdBuilders
- Ironrootslandscaping LimitedLandscapers and gardeners
- Lee Griffiths Contractors LimitedFinishing trades
- Theglossboss LtdCleaning companies
- Brickzen Constructions LtdInstallers
- STR Drylining LtdBuilders
- Greenvoltinfrastructure LtdCivil engineering
What happens if GSP Electricians 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 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
- 13478126
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 June 2021 (5 years ago)
- Registered office
- 19 Aberffrwd Road, Mountain Ash, CF45 4AR
- Nature of business
- Construction of domestic buildings (SIC 41202)
Electrical installation (SIC 43210)
Other construction installation (SIC 43290)
Other building completion and finishing (SIC 43390) - Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 24 June 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Mountain Ash
Other active building contractors registered in Mountain Ash.
- Jiga Hertz Electrical Engineering and General Services Limited2020
- JJ Brickwork and Stonework Specialists Limited2020
- KR Windows Installations Ltd2024
- KW Groundworks Ltd2017
- Largercoast Group Ltd2022
- Orp Drylining Ltd2019
- P.L.T Construction Limited2025
- Precision Kitchen Fitting Ltd2025
All building contractors in Mountain Ash · All trades in Mountain Ash · Builders across the UK
Frequently asked questions
When are GSP Electricians Ltd's accounts due?
GSP Electricians Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is GSP Electricians Ltd'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 GSP Electricians Ltd still trading?
GSP Electricians 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 GSP Electricians Ltd do?
GSP Electricians Ltd is registered under Construction of domestic buildings (SIC 41202); Electrical installation (SIC 43210); Other construction installation (SIC 43290); Other building completion and finishing (SIC 43390).
How old is GSP Electricians Ltd?
GSP Electricians Ltd was incorporated on 25 June 2021, 5 years ago.
What is the penalty if GSP Electricians 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 GSP Electricians 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.