- Companies
- Electricians
- Wimbledon
- GSK Electrical Services Limited
GSK Electrical Services Limited
- Company number
- 05975945
- Incorporated
- 24 Oct 200619 years trading
- Registered office
- 4TH Floor Tuition House 27/37 ST George's Road, Wimbledon, London, SW19 4EU
- Nature of business
- Electrical installation
GSK Electrical Services Limited is a 19-year-old private limited company registered in Wimbledon, company number 05975945, one of 8 electrical contractors in Wimbledon. 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 down £685 (-0.2%) on the year before, to £303K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £939K against £682K owed within a year: 1.4 times cover.
- 14 employees on average, down from 15 the year before.
- 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 | £303K | £308 | £939K | £682K | 14 |
| 31 Mar 2024 | £304K | £320 | £795K | £520K | 15 |
| 31 Mar 2023 | £317K | £330 | £930K | £638K | 17 |
| 31 May 2022 | £655K | £244K | £871K | £234K | 17 |
| 31 May 2021 | £499K | £327K | £1.4M | £899K | 17 |
| 31 Mar 2020 | £308K | £90K | £540K | £272K | 14 |
| 31 Mar 2019 | £213K | £28K | £634K | £455K | 14 |
| 31 Mar 2018 | £153K | £131K | £451K | £325K | 12 |
| 31 Mar 2017 | £239K | £26K | £579K | £366K | 14 |
| 31 Mar 2016 | £227K | £24K | £576K | £368K |
Where GSK Electrical Services Limited is registered
The registered office is in Wimbledon (SW19), in the Merton local authority area, London. Show SW19 4EU on a map.
Other trade companies in SW19
- Firstfixlondon Ltd.Builders
- Rainbow One Construction UK LtdSpecialist contractors
- Base Bloc LimitedBuilders
- Concealed Climate LimitedPlumbers and heating engineers
- Morningside LtdProperty developers
- Cupi-Building LtdBuilders
- Crown Infra London LtdBuilders
- Aj & Co One LtdProperty developers
Also registered at this address
13 other companies use the same registered office as GSK Electrical Services Limited.
- 10Ant Capital LimitedProperty developers
- Applegarth Home Improvements LimitedFinishing trades
- Artin Homes Ltd.Property developers
- Bellevue Glazing LimitedJoiners and carpenters
- Four Walls Property Holdings LimitedProperty developers
- Jones Bros Garage LtdMechanics and garages
- Merton Auto Technics LimitedMechanics and garages
- Morrell Developments LimitedProperty developers
- N Woodworth LimitedBuilders
- QPD1 LimitedBuilders
- QPD3 LimitedBuilders
- Qualitas Property Development LtdBuilders
- Shouson Hill LtdBuilders
What happens if GSK Electrical Services 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
- 05975945
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 October 2006 (19 years ago)
- Registered office
- 4TH Floor Tuition House 27/37 ST George's Road, Wimbledon, London, SW19 4EU
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 24 October 2025
- Charges (mortgages)
- 1 outstanding of 1 registered
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 Wimbledon
Other active electrical contractors registered in Wimbledon.
- Jay Bee Electrical Limited2003
- MPC Electrics and Handyman Ltd2021
- Octave London Ltd2018
- S M Harrop Limited2012
- Ac Electrical (Surrey) Limited2019
- Ail Consultancy Ltd2018
- DC Electrical London Ltd2015
All electrical contractors in Wimbledon · All trades in Wimbledon · Electricians across the UK
Frequently asked questions
When are GSK Electrical Services Limited's accounts due?
GSK Electrical Services 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 GSK Electrical Services 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 GSK Electrical Services Limited still trading?
GSK Electrical Services 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 GSK Electrical Services Limited do?
GSK Electrical Services Limited is registered under Electrical installation (SIC 43210).
How old is GSK Electrical Services Limited?
GSK Electrical Services Limited was incorporated on 24 October 2006, 19 years ago.
What is the penalty if GSK Electrical Services 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 GSK Electrical Services 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.