- Company number
- 01459172
- Incorporated
- 5 Nov 197946 years trading
- Registered office
- Foresters Hall, 25-27 Westow Street, London, SE19 3RY
- Nature of business
- Construction of commercial buildings
Collinstown Construction Limited is a 46-year-old private limited company registered in London, company number 01459172, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £3,271 (+7.5%) on the year before, to £47K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £301K against £264K owed within a year: 1.1 times cover.
- 2 employees on average during the year.
- 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 Mar 2025 | £47K | £105K | £301K | £264K | 2 |
| 31 Mar 2024 | £44K | £11K | £174K | £109K | 2 |
| 31 Mar 2023 | £51K | £658 | £326K | £240K | 2 |
| 31 Mar 2022 | £61K | £754 | £234K | £135K | 2 |
| 31 Mar 2021 | £72K | £85K | £277K | £172K | 2 |
| 31 Mar 2020 | £57K | £299 | £226K | £189K | 3 |
| 31 Mar 2019 | £81K | £353 | £240K | £172K | 2 |
| 31 Mar 2018 | £97K | £369 | £281K | £200K | 2 |
| 31 Mar 2017 | £118K | £1,777 | £289K | £190K | 2 |
| 31 Mar 2016 | £120K | £34 | £174K | £70K |
Public contracts won
Collinstown Construction Limited has 5 public sector contract awards on record; the ones with their own published value total £25M, from 2025 to 2026. Source: Contracts Finder and Find a Tender award notices. For 1 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. 4 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- London Borough of Wandsworth3 awards
- Sec Procurement Limited T/A South East Consortium1 award
- Wandsworth Borough Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Sec Procurement Limited T/A South East Consortium | Repairs and Maintenance Dynamic Market | Ceiling, not shown | 8 Sep 2026 |
| London Borough of Wandsworth | Window Renewal, Roof Repairs & External Decorations at 54 Westover Road | £89K | 18 Aug 2026 |
| London Borough of Wandsworth | Rear/Side Extension and Void Works at 15 Beclands Road | £260K | 11 Nov 2025 |
| London Borough of Wandsworth | Void Rear Extension at 9 Pentlow Street | £244K | 26 May 2025 |
| Wandsworth Borough Council | Void Rear Extension at 9 Pentlow Street | £24M | 20 May 2025 |
Where Collinstown Construction Limited is registered
The registered office is in London (SE19), in the Croydon local authority area, London. Show SE19 3RY on a map.
Other trade companies in SE19
- Peak Contractor Services LtdRoofers
- Adisco Engineering Plumbing and Gas LtdPlumbers and heating engineers
- Melo Development Partners LtdElectricians
- Via Alta Assets LimitedMechanics and garages
- Sekgro Groups LtdProperty developers
- BDB London LtdMachinery repair and installation
- Ibd Construction LtdSpecialist contractors
- Skylimit Facility Services LimitedFacilities management
Also registered at this address
14 other companies use the same registered office as Collinstown Construction Limited.
- Aurum Developments LtdProperty developers
- C Ferri Interiors LtdPlasterers
- Ca Engineering Services LimitedMachinery repair and installation
- Collinstown Developments LimitedProperty developers
- Easi Lock LimitedFacilities management
- Global Pipe Services LimitedPlumbers and heating engineers
- J. C. A. Building LimitedBuilders
- Jullien Landscaping LtdLandscapers and gardeners
- Moveable Wall Systems LimitedInstallers
- MR Ignitor LimitedMotor traders
- Nolan Holdings LimitedProperty developers
- PCS Land & Developments LimitedProperty developers
- Sash Cleaning Services LimitedCleaning companies
- Willowtree Energy LtdElectricians
What happens if Collinstown Construction 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 01459172
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 November 1979 (46 years ago)
- Registered office
- Foresters Hall, 25-27 Westow Street, London, SE19 3RY
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 19 November 2025
- Charges (mortgages)
- 3 outstanding of 4 registered
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 London
Other active building contractors registered in London.
- Color Rays Ltd2025
- Colourcoding Ltd2018
- Colvin Construction Limited2026
- Com&Va Construction Ltd2022
- Coman Construction Limited2015
- Comast Construction Limited2005
- Combit Renovations Ltd2022
- Comeshandy Constructions Limited2017
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Collinstown Construction Limited's accounts due?
Collinstown Construction Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Collinstown Construction Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Collinstown Construction Limited still trading?
Collinstown Construction 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 Collinstown Construction Limited do?
Collinstown Construction Limited is registered under Construction of commercial buildings (SIC 41201).
How old is Collinstown Construction Limited?
Collinstown Construction Limited was incorporated on 5 November 1979, 46 years ago.
Has Collinstown Construction Limited won public sector contracts?
Yes. Collinstown Construction Limited has 5 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £25M), most recently from SEC PROCUREMENT LIMITED T/A SOUTH EAST CONSORTIUM.
What is the penalty if Collinstown Construction 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 Collinstown Construction 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.