- Companies
- Specialist contractors
- Belfast
- SP Magowan Limited
SP Magowan Limited
- Company number
- NI637985
- Incorporated
- 21 Apr 201610 years trading
- Registered office
- Opus, York Road, Belfast, BT15 3GZ
- Nature of business
- Other specialised construction activities n.e.c.
SP Magowan Limited is a 10-year-old private limited company registered in Belfast, company number NI637985, one of 110 specialist construction companies in Belfast. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 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 £36K on the year before, to £38K.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £50K against £29K owed within a year: 1.7 times cover.
- 1 employee 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 |
|---|---|---|---|---|---|
| 30 Apr 2025 | £38K | £50K | £29K | 1 | |
| 30 Apr 2024 | £2,694 | £29K | £39K | 1 | |
| 30 Apr 2023 | £18 | £6,848 | £15K | £33K | 1 |
| 30 Apr 2022 | -£280 | £17K | £33K | 2 | |
| 30 Apr 2021 | £5,658 | £4,795 | £14K | £31K | 2 |
| 30 Apr 2020 | £46K | £26K | £12K | 2 | |
| 30 Apr 2019 | £51K | £13K | £47K | £22K | |
| 30 Apr 2018 | £47K | £20K | £31K | £13K | 1 |
| 30 Apr 2017 | £17K | £1,880 | £10K | £20K | 1 |
Where SP Magowan Limited is registered
The registered office is in Belfast (BT15), in the Belfast local authority area, Northern Ireland. Show BT15 3GZ on a map.
Other trade companies in BT15
- Amc Construction & Joinery LimitedBuilders
- Belfast Renovations LtdBuilders
- JBC Motors LtdMotor traders
- LDL Automotive LtdMechanics and garages
- Imo Bespoke Finishes LimitedJoiners and carpenters
- Modern Day Properties LtdProperty developers
- Brothers Hand Car Wash LtdMechanics and garages
- JH Carpets LimitedCleaning companies
What happens if SP Magowan 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 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
- NI637985
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 April 2016 (10 years ago)
- Registered office
- Opus, York Road, Belfast, BT15 3GZ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 19 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 in Belfast
Other active specialist construction companies registered in Belfast.
- Stabilisure Ltd2018
- Stephen Davidson Gas Services Ltd2018
- Stephen King Home Improvements Ltd2026
- Surface Corrosion Consultants Ltd2010
- T.F. Brickwork Limited2026
- The Prop Makers Limited2023
- The Pure Fitout Company Limited2025
- TK Property N.I. Ltd2024
All specialist construction companies in Belfast · All trades in Belfast · Specialist contractors across the UK
Frequently asked questions
When are SP Magowan Limited's accounts due?
SP Magowan Limited's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is SP Magowan Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is SP Magowan Limited still trading?
SP Magowan 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 SP Magowan Limited do?
SP Magowan Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is SP Magowan Limited?
SP Magowan Limited was incorporated on 21 April 2016, 10 years ago.
What is the penalty if SP Magowan 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 SP Magowan 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.