- Companies
- Electricians
- P. MC Colgan & Sons Limited
P. MC Colgan & Sons Limited
- Company number
- NI036930
- Incorporated
- 15 Sep 199927 years trading
- Registered office
- 3 Hall Lane, Ardmore, Co L'derry, BT47 3RQ
- Nature of business
- Electrical installation
P. MC Colgan & Sons Limited is a 27-year-old private limited company registered in Co L'derry, company number NI036930, one of the UK's electrical contractors. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £217K (-39.7%) on the year before, to £329K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £294K against £25K owed within a year: more than 10 times cover.
- 15 employees on average, up from -21 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £329K | £155K | £294K | £25K | 15 |
| 31 Oct 2024 | £546K | £370K | £511K | £52K | -21 |
| 31 Oct 2023 | £617K | £342K | £582K | £66K | -20 |
| 31 Oct 2022 | £594K | £367K | £579K | £71K | -20 |
| 31 Oct 2021 | £587K | £291K | £582K | £110K | -21 |
| 31 Oct 2020 | £431K | £192K | £430K | £126K | -21 |
| 31 Oct 2019 | £428K | £199K | £413K | £119K | -22 |
| 31 Oct 2018 | £339K | £84K | £393K | £160K | 25 |
| 31 Oct 2017 | £293K | £39K | £369K | £194K | 27 |
| 31 Oct 2016 | £325K | £94K | £352K | £116K |
Public contracts won
P. MC Colgan & Sons Limited has one public sector contract award on record (2025). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Derry City and Strabane District Council | T25-056ENV Festive Lighting | 4 Sep 2025 |
Where P. MC Colgan & Sons Limited is registered
The registered office is in Co L'derry (BT47), in the Derry City and Strabane local authority area, Northern Ireland. Show BT47 3RQ on a map.
Other trade companies in BT47
- RNK Contracts LimitedGroundworks and demolition
- Den Electrical LtdElectricians
- BDK Consulting LimitedProperty developers
- Oakline Engineering LtdInstallers
- Killew Property Services LimitedFacilities management
- PH Autobody LimitedMechanics and garages
- C Doherty Autos LtdMechanics and garages
- CPMH LtdBuilders
What happens if P. MC Colgan & Sons 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- NI036930
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 September 1999 (27 years ago)
- Registered office
- 3 Hall Lane, Ardmore, Co L'derry, BT47 3RQ
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 1 February 2026
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies
Other active electrical contractors.
Frequently asked questions
When are P. MC Colgan & Sons Limited's accounts due?
P. MC Colgan & Sons Limited's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is P. MC Colgan & Sons Limited's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is P. MC Colgan & Sons Limited still trading?
P. MC Colgan & Sons 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 P. MC Colgan & Sons Limited do?
P. MC Colgan & Sons Limited is registered under Electrical installation (SIC 43210).
How old is P. MC Colgan & Sons Limited?
P. MC Colgan & Sons Limited was incorporated on 15 September 1999, 27 years ago.
Has P. MC Colgan & Sons Limited won public sector contracts?
Yes. P. MC Colgan & Sons Limited has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Derry City and Strabane District Council.
What is the penalty if P. MC Colgan & Sons 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 P. MC Colgan & Sons 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.