- Companies
- Property developers
- Thurso
- G G Mackay Limited
G G Mackay Limited
- Company number
- SC725213
- Incorporated
- 4 Mar 20224 years trading
- Registered office
- Caledonia House, Buldoo, Thurso, Caithness, KW14 7YB
- Nature of business
- Development of building projects
G G Mackay Limited is a 4-year-old private limited company registered in Thurso, company number SC725213, one of the UK's property development companies. 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 £230K (+274.4%) on the year before, to £313K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £316K against £837K owed within a year: 0.4 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 4 years, 2023 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £313K | £128K | £316K | £837K | 0 |
| 31 Mar 2025 | £84K | £282K | £429K | £833K | 7 |
| 31 Mar 2024 | £38K | £48K | £219K | £180K | 2 |
| 31 Mar 2023 | £100 | £0 | £100 | £0 | 2 |
Public contracts won
G G Mackay Limited has one public sector contract award on record; the ones with their own published value total £34K (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Nuclear Restoration Services Limited | Electric Vehicle Charging Installation - Off Site East Car Park | £34K | 16 Jul 2026 |
Where G G Mackay Limited is registered
The registered office is in Thurso (KW14), in the Highland local authority area, Scotland. Show KW14 7YB on a map.
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What happens if G G Mackay 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 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
- SC725213
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 March 2022 (4 years ago)
- Registered office
- Caledonia House, Buldoo, Thurso, Caithness, KW14 7YB
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 3 March 2026
- Previous names
- Buldoo Construction Limited (until 27 Feb 2024)
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Thurso
Other active property development companies registered in Thurso.
All property development companies in Thurso · All trades in Thurso · Property developers across the UK
Frequently asked questions
When are G G Mackay Limited's accounts due?
G G Mackay Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is G G Mackay Limited'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 G G Mackay Limited still trading?
G G Mackay 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 G G Mackay Limited do?
G G Mackay Limited is registered under Development of building projects (SIC 41100).
How old is G G Mackay Limited?
G G Mackay Limited was incorporated on 4 March 2022, 4 years ago.
Has G G Mackay Limited won public sector contracts?
Yes. G G Mackay Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £34K), most recently from Nuclear Restoration Services Limited.
What is the penalty if G G Mackay 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 G G Mackay 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.