- Company number
- 11642613
- Incorporated
- 25 Oct 20187 years trading
- Registered office
- 1 Tank Lane, Purfleet, RM19 1TA
- Nature of business
- Construction of domestic buildings; Other specialised construction activities n.e.c.
Capital Underpinning Ltd is a 7-year-old private limited company registered in Purfleet, company number 11642613, one of 25 building contractors in Purfleet. 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 £2,632 (-16.7%) on the year before, to -£18K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £2,062 against £20K owed within a year: 0.1 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | -£18K | £2,062 | £20K | 3 | |
| 31 Oct 2024 | -£16K | £4,570 | £20K | 3 | |
| 31 Oct 2023 | -£25K | £627 | £2,220 | £21K | 3 |
| 31 Oct 2022 | -£28K | £103 | £1,770 | £22K | 3 |
| 31 Oct 2021 | £182 | £3,923 | £27K | £18K | 3 |
| 31 Oct 2020 | -£5,589 | £6,613 | £14K | £20K | 3 |
| 31 Oct 2019 | £100 | £100 |
Where Capital Underpinning Ltd is registered
The registered office is in Purfleet (RM19), in the Thurrock local authority area, East of England. Show RM19 1TA on a map.
Other trade companies in RM19
- Gabwise LtdBuilders
- Essex Buildings Services Ltd.Specialist contractors
- Rainham Facilities Management LtdFacilities management
- Ci Security LtdInstallers
- Thameside Fencing and Gardening LtdLandscapers and gardeners
- Thurrock MOT & Service Centre LtdMechanics and garages
- Capelo Pro Build LtdMechanics and garages
- Quality One Electrics LtdSpecialist contractors
What happens if Capital Underpinning 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 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
- 11642613
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 October 2018 (7 years ago)
- Registered office
- 1 Tank Lane, Purfleet, RM19 1TA
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 24 October 2025
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 Purfleet
Other active building contractors registered in Purfleet.
- Construx Building & Maintenance Ltd2018
- Dreton Home Extensions Ltd2014
- Elite Fire Sprinklers Ltd2021
- GC Electrical & Building Services Ltd2010
- Great Choice Construction Ltd2020
- Hagger & Son Construction Ltd2013
- Imi Interiors Ltd2016
- L.R.B General Ltd2014
All building contractors in Purfleet · All trades in Purfleet · Builders across the UK
Frequently asked questions
When are Capital Underpinning Ltd's accounts due?
Capital Underpinning Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Capital Underpinning Ltd'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 Capital Underpinning Ltd still trading?
Capital Underpinning 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 Capital Underpinning Ltd do?
Capital Underpinning Ltd is registered under Construction of domestic buildings (SIC 41202); Other specialised construction activities n.e.c. (SIC 43999).
How old is Capital Underpinning Ltd?
Capital Underpinning Ltd was incorporated on 25 October 2018, 7 years ago.
What is the penalty if Capital Underpinning 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 Capital Underpinning 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.