- Company number
- NI640786
- Incorporated
- 13 Sep 201610 years trading
- Registered office
- 23-25 Queen Street, Coleraine, Londonderry, BT52 1BG
- Nature of business
- Construction of domestic buildings
Mathewson Square Ltd is a 10-year-old private limited company registered in Coleraine, company number NI640786, one of 28 building contractors in Coleraine. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £1,083 (-5.7%) on the year before, to -£20K.
- Net assets rose in 0 of 6 year-on-year comparisons on record.
- Current assets of £467K against £487K owed within a year: 1.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Sep 2025 | -£20K | £5,662 | £467K | £487K | 0 |
| 30 Sep 2024 | -£19K | £25K | £442K | £461K | 1 |
| 30 Sep 2023 | -£15K | £29K | £465K | £479K | 1 |
| 30 Sep 2022 | -£9,068 | £35K | £470K | £479K | 1 |
| 30 Sep 2021 | -£8,008 | £36K | £471K | £479K | 0 |
| 30 Sep 2020 | -£6,984 | £36K | £472K | £478K | 0 |
| 30 Sep 2019 | -£4,927 | £38K | £474K | £478K | |
| 30 Sep 2018 | £39K | £475K | £479K | ||
| 30 Sep 2017 | £41K | £477K | £479K |
Public contracts won
Mathewson Square Ltd has one public sector contract award on record; the ones with their own published value total £6.1M (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Choice Housing Ireland Limited | PRN25069 Ballymoney Area Land, Design & Build | £6.1M | 28 Jan 2026 |
Where Mathewson Square Ltd is registered
The registered office is in Coleraine (BT52), in the Causeway Coast and Glens local authority area, Northern Ireland. Show BT52 1BG on a map.
Other trade companies in BT52
- CBMS LimitedFacilities management
- Old Market Vans (Coleraine) LtdMotor traders
- Epj Developments LtdProperty developers
- Cbin Developments LimitedProperty developers
- Kian Construction Group LtdSpecialist contractors
- Royeir LtdSpecialist contractors
- Gowiththeflowbathrooms LtdInstallers
- Causeway Pest Control LtdCleaning companies
Also registered at this address
1 other company uses the same registered office as Mathewson Square Ltd.
- Kamin (Coleraine) LtdMotor traders
What happens if Mathewson Square 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- NI640786
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 September 2016 (10 years ago)
- Registered office
- 23-25 Queen Street, Coleraine, Londonderry, BT52 1BG
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 9 September 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Coleraine
Other active building contractors registered in Coleraine.
- NB Homes Limited2016
- Pam Building Services Ltd2019
- Paul Etherson Construction Ltd2025
- PM Lynwood Limited2014
- Raist Properties Ltd2024
- Ramore Property Developments Limited2018
- RH Joinery Ltd2014
- RJ Bradley Construction Ltd2005
All building contractors in Coleraine · All trades in Coleraine · Builders across the UK
Frequently asked questions
When are Mathewson Square Ltd's accounts due?
Mathewson Square Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Mathewson Square Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Mathewson Square Ltd still trading?
Mathewson Square 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 Mathewson Square Ltd do?
Mathewson Square Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Mathewson Square Ltd?
Mathewson Square Ltd was incorporated on 13 September 2016, 10 years ago.
Has Mathewson Square Ltd won public sector contracts?
Yes. Mathewson Square Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £6.1M), most recently from Choice Housing Ireland Limited.
What is the penalty if Mathewson Square 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 Mathewson Square 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.