- Companies
- Electricians
- Guildford
- Under One Roof (Southern) Limited
Under One Roof (Southern) Limited
- Company number
- 04685672
- Incorporated
- 4 Mar 200323 years trading
- Registered office
- 3 Lincoln Road, Guildford, Surrey, GU2 9TJ
- Nature of business
- Electrical installation
Under One Roof (Southern) Limited is a 23-year-old private limited company registered in Guildford, company number 04685672, one of 74 electrical contractors in Guildford. 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 £4,071 (-428.5%) on the year before, to -£5,021.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £4,308 against £9,329 owed within a year: 0.5 times cover.
- 2 employees on average during the year.
- 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 | -£5,021 | £4,128 | £4,308 | £9,329 | 2 |
| 31 Mar 2024 | -£950 | £11K | £13K | £14K | 2 |
| 31 Mar 2023 | £5,716 | £20K | £21K | £15K | 2 |
| 31 Mar 2022 | £7,100 | £18K | £24K | £17K | 2 |
| 31 Mar 2021 | £2,087 | £16K | £19K | £17K | 2 |
| 31 Mar 2020 | £1,072 | £1,248 | £6,122 | £5,050 | 2 |
| 31 Mar 2019 | £1,374 | £6,594 | £8,076 | £6,702 | 2 |
| 31 Mar 2018 | £7,671 | £7,239 | £16K | £7,836 | 2 |
| 31 Mar 2017 | £1,840 | £2,679 | £9,684 | £7,844 | 2 |
| 31 Mar 2016 | £1,225 | £9,454 | £11K | £9,969 |
Where Under One Roof (Southern) Limited is registered
The registered office is in Guildford (GU2), in the Guildford local authority area, South East. Show GU2 9TJ on a map.
Other trade companies in GU2
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- Ykr LtdFinishing trades
- McLeaning Company LtdCleaning companies
- BC Plastering (Surrey) LtdPlasterers
- Dust to Diamonds LtdCleaning companies
- Oriolus Developments LtdProperty developers
- Ri Collison LimitedMachinery repair and installation
- Apex Climate Group LtdElectricians
What happens if Under One Roof (Southern) 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
- 04685672
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 March 2003 (23 years ago)
- Registered office
- 3 Lincoln Road, Guildford, Surrey, GU2 9TJ
- 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
- 21 March 2026
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 Guildford
Other active electrical contractors registered in Guildford.
- Watts Electrical Solutions Ltd2021
- Wiseamp Electrics Ltd2022
- A Good Electrical Company Limited2020
- A J Electrical Contractors Limited2007
- A.E.L. Electrical Ltd2018
- Actual Electrical Limited2007
- Ae Electrical Services Limited2022
- Ai Technology Limited2014
All electrical contractors in Guildford · All trades in Guildford · Electricians across the UK
Frequently asked questions
When are Under One Roof (Southern) Limited's accounts due?
Under One Roof (Southern) 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 Under One Roof (Southern) 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 Under One Roof (Southern) Limited still trading?
Under One Roof (Southern) 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 Under One Roof (Southern) Limited do?
Under One Roof (Southern) Limited is registered under Electrical installation (SIC 43210).
How old is Under One Roof (Southern) Limited?
Under One Roof (Southern) Limited was incorporated on 4 March 2003, 23 years ago.
What is the penalty if Under One Roof (Southern) 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 Under One Roof (Southern) 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.