- Companies
- Machinery repair and installation
- Oban
- Mainstay Scotland Limited
Mainstay Scotland Limited
- Company number
- SC638330
- Incorporated
- 8 Aug 20197 years trading
- Registered office
- Unit 3, Glenshellach Business Park, Oban, PA34 4RY
- Nature of business
- Repair of machinery; Installation of industrial machinery and equipment
Mainstay Scotland Limited is a 7-year-old private limited company registered in Oban, company number SC638330, one of 15 machinery repair and installation companies in Oban. Companies House shows its accounts as overdue: they were due on 30 September 2026.
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 £244K (-65.7%) on the year before, to -£616K.
- Net assets rose in 0 of 5 year-on-year comparisons on record.
- Current assets of £3,173 against £619K owed within a year: 0.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 6 years, 2020 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | -£616K | £1,583 | £3,173 | £619K | 0 |
| 31 Dec 2023 | -£372K | £2,650 | £4,612 | £376K | 3 |
| 31 Dec 2022 | -£219K | £1,143 | £3,134 | £222K | 4 |
| 31 Dec 2021 | -£94K | £9,771 | £80K | £174K | 5 |
| 30 Dec 2021 | -£94K | £9,771 | £80K | £174K | 5 |
| 31 Dec 2020 | -£52K | £100K | £802K | £855K | 3 |
Where Mainstay Scotland Limited is registered
The registered office is in Oban (PA34), in the Argyll and Bute local authority area, Scotland. Show PA34 4RY on a map.
Other trade companies in PA34
- Tidy Raccoons LtdMechanics and garages
- A&B Automotive LtdMechanics and garages
- Pure Clean Laundry LtdCleaning companies
- Clarity Services Oban LtdProperty developers
- West Coast Autoworks LimitedMechanics and garages
- Kerrera Marine Services LimitedMachinery repair and installation
- Sas Auto Services (Scotland) LtdMechanics and garages
- Aurora Rising Collective LtdProperty developers
What happens if Mainstay Scotland Limited files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- SC638330
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 August 2019 (7 years ago)
- Registered office
- Unit 3, Glenshellach Business Park, Oban, PA34 4RY
- Nature of business
- Repair of machinery (SIC 33120)
Installation of industrial machinery and equipment (SIC 33200) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 7 August 2026
- Previous names
- Mpi Scotland Limited (until 10 Aug 2021)
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 Oban
Other active machinery repair and installation companies registered in Oban.
- Steeman Engineering Ltd2013
- Adam Fire Engineers Limited2016
- Argyll Engineers Ltd2018
- Barrblast Engineering Limited2013
- Creran Marine Limited2013
- D-Mac Services Argyll Limited2016
- Ferguson Subsea Ltd2025
- Forteith Refrigeration & Heat Pump Solutions Limited2012
All machinery repair and installation companies in Oban · All trades in Oban · Machinery repair and installation across the UK
Frequently asked questions
When are Mainstay Scotland Limited's accounts due?
Mainstay Scotland Limited's accounts were due at Companies House on 30 September 2026 and the register shows them as overdue.
When is Mainstay Scotland Limited's CT600 due?
The CT600 for the period to 31 December 2025 is due at HMRC by 31 December 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2026.
Is Mainstay Scotland Limited still trading?
Mainstay Scotland Limited is listed as active on the Companies House register (checked 12 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 Mainstay Scotland Limited do?
Mainstay Scotland Limited is registered under Repair of machinery (SIC 33120); Installation of industrial machinery and equipment (SIC 33200).
How old is Mainstay Scotland Limited?
Mainstay Scotland Limited was incorporated on 8 August 2019, 7 years ago.
What is the penalty if Mainstay Scotland 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 Mainstay Scotland Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.