- Companies
- Specialist contractors
- London
- Denham Sealants Limited
Denham Sealants Limited
- Company number
- 08024681
- Incorporated
- 11 Apr 201214 years trading
- Registered office
- 4TH Floor, 100 Fenchurch Street, London, EC3M 5JD
- Nature of business
- Other specialised construction activities n.e.c.
Denham Sealants Limited is a 14-year-old private limited company registered in London, company number 08024681, one of 4,318 specialist construction companies 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 £714 (+2.4%) on the year before, to £30K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £40K against £10K owed within a year: 4.0 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 | £30K | £6,370 | £40K | £10K | 2 |
| 31 Mar 2024 | £29K | £7,700 | £46K | £15K | 2 |
| 31 Mar 2023 | £19K | £2,962 | £35K | £15K | 2 |
| 31 Mar 2022 | £2,994 | £3,650 | £14K | £9,039 | 2 |
| 31 Mar 2021 | £19K | £25K | £52K | £30K | 2 |
| 31 Mar 2020 | £11K | £1,747 | £16K | £4,933 | 1 |
| 31 Mar 2019 | £10K | £3,300 | £13K | £4,103 | 1 |
| 31 Mar 2018 | £6,179 | £2,146 | £9,735 | £4,618 | 1 |
| 31 Mar 2017 | £2,554 | £1,848 | £16K | £15K | 1 |
| 31 Mar 2016 | -£2,254 | £456 | £13K |
Where Denham Sealants Limited is registered
The registered office is in London (EC3M), in the City of London local authority area, London. Show EC3M 5JD on a map.
Other trade companies in EC3M
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- Voltaire Coinvest LimitedProperty developers
- Addeo LtdPlumbers and heating engineers
- Favaretti (UK) LtdMachinery repair and installation
- Adaptive MDC LtdBuilders
- DJP Drylining LimitedSpecialist contractors
- Bausager & Bouquet LtdLandscapers and gardeners
- Fore Renovations LtdInstallers
Also registered at this address
21 other companies use the same registered office as Denham Sealants Limited.
- Abode Services (Essex) LimitedInstallers
- Adaptive MDC LtdBuilders
- B.F.Construction LimitedProperty developers
- Bausager & Bouquet LtdLandscapers and gardeners
- Caliber Interiors LimitedFinishing trades
- Capital Roofing & Building Services LimitedInstallers
- Carfest LimitedMotor traders
- Commercial Windows & Doors LimitedFacilities management
- D C Cleaning & Services LimitedCleaning companies
- DJP Drylining LimitedSpecialist contractors
- J Scanlon LimitedFinishing trades
- JCJ Investments LimitedMotor traders
- Ling Engineering LimitedSpecialist contractors
- M J Drane Building LimitedFinishing trades
- PJ Lyons LimitedPlumbers and heating engineers
- Rampaul Electrical LimitedMachinery repair and installation
- Rock Solid LimitedProperty developers
- Voltaire Coinvest LimitedProperty developers
- Wentworth Country Homes LimitedProperty developers
- Winchester Auto Barn & Drivers Club LimitedMechanics and garages
- Yoav Shlomi Landscapes LimitedLandscapers and gardeners
What happens if Denham Sealants 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
- 08024681
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 April 2012 (14 years ago)
- Registered office
- 4TH Floor, 100 Fenchurch Street, London, EC3M 5JD
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 11 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 London
Other active specialist construction companies registered in London.
- Denholme Consultancy Limited2024
- Denis I&S Ltd2021
- Dennis Lock & Key Limited2005
- Denplex Arabia Ltd2025
- Dentalux Build Ltd2021
- Deon Energy Ltd2014
- Derisk (UK) Holdings Limited2019
- Derreeney Construction Services Ltd2023
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Denham Sealants Limited's accounts due?
Denham Sealants Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Denham Sealants 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 Denham Sealants Limited still trading?
Denham Sealants 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 Denham Sealants Limited do?
Denham Sealants Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Denham Sealants Limited?
Denham Sealants Limited was incorporated on 11 April 2012, 14 years ago.
What is the penalty if Denham Sealants 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 Denham Sealants 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.