- Companies
- Specialist contractors
- Tantallon Energy Ltd
Tantallon Energy Ltd
- Company number
- SC531647
- Incorporated
- 5 Apr 201610 years trading
- Registered office
- Tantallon House, Bogsbank Road, West Linton, Peeblesshire, EH46 7EN
- Nature of business
- Other specialised construction activities n.e.c.
Tantallon Energy Ltd is a 10-year-old private limited company registered in West Linton, company number SC531647, one of the UK's specialist construction companies. Its next accounts are due at Companies House on 4 January 2027, and the CT600 for the period to 4 April 2026 is due at HMRC on 4 April 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 up £19K (+21.9%) on the year before, to £105K.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- Current assets of £65K against £40K owed within a year: 1.6 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 4 Apr 2025 | £105K | £65K | £40K | 2 | |
| 4 Apr 2024 | £86K | £55K | £28K | 2 | |
| 4 Apr 2023 | £86K | £123K | £38K | 2 | |
| 4 Apr 2022 | £40K | £138K | £73K | 2 | |
| 4 Apr 2021 | £24K | £91K | £43K | 2 | |
| 4 Apr 2020 | £8,963 | £48K | £44K | 2 | |
| 4 Apr 2019 | £2,929 | £48K | £20K | 1 | |
| 4 Apr 2018 | £1 | £1 | |||
| 4 Apr 2017 | £1 | £1 |
Where Tantallon Energy Ltd is registered
The registered office is in West Linton (EH46), in the Scottish Borders local authority area, Scotland. Show EH46 7EN on a map.
Other trade companies in EH46
- Mauricewood Developments LtdBuilders
- Manor Garage (W. L.) LtdMechanics and garages
- Forever Timber LtdRepair services
- Leadburn Developments LimitedProperty developers
- Amtec Electrical Systems LtdMachinery repair and installation
- Patai LimitedProperty developers
- Ecospark Energy Solutions LtdElectricians
- West Linton MOT Test Centre LtdMechanics and garages
What happens if Tantallon Energy 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 4 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Jan 2027 to 4 Feb 2027 | £150 |
| 1 to 3 months late | 5 Feb 2027 to 4 Apr 2027 | £375 |
| 3 to 6 months late | 5 Apr 2027 to 4 Jul 2027 | £750 |
| More than 6 months late | From 5 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 5 Apr 2027 | £200 |
| 3 months late | 4 Jul 2027 | another £200 |
| 6 months late | 4 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 4 Apr 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
- SC531647
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 April 2016 (10 years ago)
- Registered office
- Tantallon House, Bogsbank Road, West Linton, Peeblesshire, EH46 7EN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 4 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 4 April 2025
- Last confirmation statement
- 4 April 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies
Other active specialist construction companies.
Frequently asked questions
When are Tantallon Energy Ltd's accounts due?
Tantallon Energy Ltd's next accounts are due at Companies House by 4 January 2027 (in 83 days), covering the period to 4 April 2026.
When is Tantallon Energy Ltd's CT600 due?
The CT600 for the period to 4 April 2026 is due at HMRC by 4 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 5 January 2027.
Is Tantallon Energy Ltd still trading?
Tantallon Energy 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 Tantallon Energy Ltd do?
Tantallon Energy Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Tantallon Energy Ltd?
Tantallon Energy Ltd was incorporated on 5 April 2016, 10 years ago.
What is the penalty if Tantallon Energy 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 Tantallon Energy 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.