- Companies
- Machinery repair and installation
- Salisbury
- High Voltage Design & Build Ltd.
High Voltage Design & Build Ltd.
- Company number
- 04273764
- Incorporated
- 20 Aug 200125 years trading
- Registered office
- The Faraday Room 5 Doctors Place, Tisbury, Salisbury, Wilstshire, SP3 6HS
- Nature of business
- Repair of electrical equipment
High Voltage Design & Build Ltd. is a 25-year-old private limited company registered in Salisbury, company number 04273764, one of 35 machinery repair and installation companies in Salisbury. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £112K (+91.7%) on the year before, to £234K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £342K against £123K owed within a year: 2.8 times cover.
- 7 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £234K | £56K | £342K | £123K | 7 |
| 31 Mar 2025 | £122K | £5,476 | £260K | £138K | 7 |
| 31 Aug 2024 | £199K | £54K | £398K | £151K | 7 |
| 31 Aug 2023 | £179K | £156K | £330K | £146K | 7 |
| 31 Aug 2022 | £212K | £25K | £236K | £47K | 8 |
| 31 Aug 2021 | £194K | £53K | £298K | £112K | 9 |
| 31 Aug 2020 | £130K | £43K | £181K | £75K | 8 |
| 31 Aug 2019 | £153K | £56K | £198K | £80K | 5 |
| 31 Aug 2018 | £77K | £2,053 | £126K | £65K | 4 |
| 31 Aug 2017 | £15K | £21K | £82K | £68K | 1 |
Where High Voltage Design & Build Ltd. is registered
The registered office is in Salisbury (SP3), in the Wiltshire local authority area, South West. Show SP3 6HS on a map.
Other trade companies in SP3
- Abbey Close Holdings LimitedScaffolders
- Brickwood Land & Homes LtdProperty developers
- Robinhood Gardening Services LtdLandscapers and gardeners
- MPS Property Maintenance LtdInstallers
- Brockwell Properties LimitedProperty developers
- 3W Developments LtdBuilders
- Days Eye LtdPainters and decorators
- Gearforge LtdMotor traders
What happens if High Voltage Design & Build 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 04273764
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 August 2001 (25 years ago)
- Registered office
- The Faraday Room 5 Doctors Place, Tisbury, Salisbury, Wilstshire, SP3 6HS
- Nature of business
- Repair of electrical equipment (SIC 33140)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 16 July 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Salisbury
Other active machinery repair and installation companies registered in Salisbury.
- M Portnall Engineering Ltd2026
- MJB Gas Solutions Ltd2025
- Ocean Footprint Solutions Ltd2025
- Post Press Systems Ltd2013
- R2 Limited Company Ltd2026
- Rangers (Durrington) Limited2015
- Rivendell Engineering Services Limited2024
- Rockbourne Motors Limited2014
All machinery repair and installation companies in Salisbury · All trades in Salisbury · Machinery repair and installation across the UK
Frequently asked questions
When are High Voltage Design & Build Ltd.'s accounts due?
High Voltage Design & Build Ltd.'s next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is High Voltage Design & Build Ltd.'s CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is High Voltage Design & Build Ltd. still trading?
High Voltage Design & Build 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 High Voltage Design & Build Ltd. do?
High Voltage Design & Build Ltd. is registered under Repair of electrical equipment (SIC 33140).
How old is High Voltage Design & Build Ltd.?
High Voltage Design & Build Ltd. was incorporated on 20 August 2001, 25 years ago.
What is the penalty if High Voltage Design & Build 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 High Voltage Design & Build 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.