- Companies
- Specialist contractors
- Coulsdon
- Cemplas Waterproofing & Concrete Repairs Limited
Cemplas Waterproofing & Concrete Repairs Limited
- Company number
- 00963334
- Incorporated
- 6 Oct 196957 years trading
- Registered office
- Cemplas House 25A Breakfield, Ullswater Industrial Estate, Coulsdon, Surrey, CR5 2HS
- Nature of business
- Other specialised construction activities n.e.c.
Cemplas Waterproofing & Concrete Repairs Limited is a 57-year-old private limited company registered in Coulsdon, company number 00963334, one of 15 specialist construction companies in Coulsdon. 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 £111K (+7.5%) on the year before, to £1.6M.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £4.6M against £3.4M owed within a year: 1.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2015 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1.6M | £1.1M | £4.6M | £3.4M | 0 |
| 31 Mar 2024 | £1.5M | £230K | £3.6M | £2.4M | 45 |
| 31 Mar 2023 | £1.6M | £397K | £3.2M | £2M | 50 |
| 31 Mar 2022 | £1.6M | £246K | £3.1M | £1.8M | 49 |
| 31 Mar 2021 | £1.5M | £714K | £2.8M | £1.6M | 39 |
| 31 Mar 2020 | £1.6M | £696K | £3.4M | £2M | 38 |
| 31 Mar 2016 | £1.6M | £1.2M | £2.6M | £1M | |
| 31 Mar 2015 | £1.4M | £706K | £2.3M | £1M |
Who runs and owns Cemplas Waterproofing & Concrete Repairs Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (4)
| Name | Role | Appointed |
|---|---|---|
| A*** B*** | Director | Jan 1994 |
| T*** B*** | Director | May 2005 |
| L*** B*** | Director | Sep 2020 |
| T*** B*** | Secretary | before Dec 1991 |
4 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| N*** B*** | Director | Dec 1993 | |
| J*** B*** | Director | Jan 1992 | May 2005 |
| A*** P*** | Director | Nov 1995 | Dec 2003 |
| J*** R*** | Director | Apr 2007 | Sep 2021 |
People with significant control (2)
Charges (secured borrowing)
1 of 3 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Kriya Finance Limited | Outstanding | Jul 2023 |
| Barclays Bank PLC | Satisfied Aug 2015 | Nov 1993 |
| Dunbar Bank PLC | Satisfied Mar 2013 | Jan 1990 |
Public contracts won
Cemplas Waterproofing & Concrete Repairs Limited has 15 public sector contract awards on record; the ones with their own published value total £6M, from 2015 to 2026. Source: Contracts Finder and Find a Tender award notices. 11 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Surrey Heath Borough Council2 awards
- Corby Borough Council2 awards
- Worcester City Council1 award
- Mansfield District Council1 award
- Amplius Living1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Worcester City Council | St Martins Gate Car Park - Resurfacing Works to Roof Level and Part Fourth Floor. | £374K | 27 May 2026 |
| Surrey Heath Borough Council | Camberley Bowling Club Re-roofing | £36K | 13 Oct 2025 |
| Mansfield District Council | Car Park Refurbishment Specification Four Seasons Multi-Storey Car Park, Mansfield | £2M | 1 Oct 2025 |
| Surrey Heath Borough Council | Camberley Theatre Flat Roof Covering | £150K | 3 Aug 2025 |
| Amplius Living | GB-Milton Keynes: Provision of Repairs to External Concrete Balcony Walkways, Stairs and Associated Works | £239K | 3 Jul 2025 |
| Burnley Borough Council | Service Deck & Ramp Remedial Works, Charter Walk Shopping Centre, Burnley | £1.2M | 11 Feb 2025 |
| Winchester City Council | Chesil Multi-Storey Car Park Re-surfacing | £299K | 7 Oct 2024 |
| Tunbridge Wells Borough Council | The repair of Pre-cast Concrete Panels, Metal Railings, and Stairways to Crescent Road Multi Storey Car Park | £454K | 7 Oct 2024 |
| University Hospitals Dorset NHS Foundation Trust | University Hospitals Dorset - Poole Hospital MSCP Concrete Repairs | £479K | 12 Aug 2024 |
| Brighton & Hove City Council | BHCC TS 4667B Car Parks - Movement Joint Works and Repairs | £161K | 11 Feb 2020 |
Showing the 10 most recent of 15.
Where Cemplas Waterproofing & Concrete Repairs Limited is registered
The registered office is in Coulsdon (CR5), in the Croydon local authority area, London. Show CR5 2HS on a map.
Other trade companies in CR5
- Rowson Electrical LtdElectricians
- Hodges Building and Landscaping LtdBuilders
- Alliance Air Conditioning LtdPlumbers and heating engineers
- HTP Construction LtdBuilders
- Apex International Construction LimitedBuilders
- Luxe Services LtdFinishing trades
- Premier Climate LtdPlumbers and heating engineers
- Jigsaw Builds LtdBuilders
What happens if Cemplas Waterproofing & Concrete Repairs 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
- 00963334
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 October 1969 (57 years ago)
- Registered office
- Cemplas House 25A Breakfield, Ullswater Industrial Estate, Coulsdon, Surrey, CR5 2HS
- 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
- 31 December 2025
- Charges (mortgages)
- 1 outstanding of 3 registered
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 Coulsdon
Other active specialist construction companies registered in Coulsdon.
- Excellent Project Management Limited2010
- Face IT Graphix UK Ltd2018
- Ian Wells and Associates Ltd2012
- Keston Project Planning Ltd2026
- Lloret F&S Holdings Limited2018
- Lloret Fire Solutions Limited1977
- Pse Installations Ltd2016
- Rysam Limited1995
All specialist construction companies in Coulsdon · All trades in Coulsdon · Specialist contractors across the UK
Frequently asked questions
When are Cemplas Waterproofing & Concrete Repairs Limited's accounts due?
Cemplas Waterproofing & Concrete Repairs 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 Cemplas Waterproofing & Concrete Repairs 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 Cemplas Waterproofing & Concrete Repairs Limited still trading?
Cemplas Waterproofing & Concrete Repairs 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 Cemplas Waterproofing & Concrete Repairs Limited do?
Cemplas Waterproofing & Concrete Repairs Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Cemplas Waterproofing & Concrete Repairs Limited?
Cemplas Waterproofing & Concrete Repairs Limited was incorporated on 6 October 1969, 57 years ago.
Who runs Cemplas Waterproofing & Concrete Repairs Limited?
Cemplas Waterproofing & Concrete Repairs Limited has 3 active directors, the longest-serving appointed in Jan 1994. Their names and service addresses are on the Companies House register.
Who owns Cemplas Waterproofing & Concrete Repairs Limited?
2 people or companies have significant control of Cemplas Waterproofing & Concrete Repairs Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
Has Cemplas Waterproofing & Concrete Repairs Limited won public sector contracts?
Yes. Cemplas Waterproofing & Concrete Repairs Limited has 15 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £6M), most recently from Worcester City Council.
What is the penalty if Cemplas Waterproofing & Concrete Repairs 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 Cemplas Waterproofing & Concrete Repairs 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.