- Companies
- Specialist contractors
- Pontyclun
- Index Waterproofing Technology UK Ltd
Index Waterproofing Technology UK Ltd
- Company number
- 07308319
- Incorporated
- 8 Jul 201016 years trading
- Registered office
- 27 Danygraig Drive, Talbot Green, Pontyclun, CF72 8AQ
- Nature of business
- Other specialised construction activities n.e.c.
Index Waterproofing Technology UK Ltd is a 16-year-old private limited company registered in Pontyclun, company number 07308319, one of 14 specialist construction companies in Pontyclun. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £29K (+55.5%) on the year before, to £82K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £163K against £80K owed within a year: 2.0 times cover.
- 1 employee 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 Aug 2025 | £82K | £163K | £80K | 1 | |
| 31 Aug 2024 | £53K | £88K | £33K | 1 | |
| 30 Sep 2023 | £166 | £42K | £38K | 1 | |
| 30 Sep 2022 | £14K | £30K | £9,411 | 2 | |
| 30 Sep 2021 | £51K | £72K | £13K | 2 | |
| 30 Sep 2020 | £112K | £282K | £127K | 1 | |
| 30 Sep 2019 | £38K | £89K | £51K | ||
| 30 Sep 2018 | £208 | £13K | £14K | ||
| 30 Sep 2017 | £11K | £42K | £32K | ||
| 30 Sep 2016 | £23K | £56K | £34K |
Where Index Waterproofing Technology UK Ltd is registered
The registered office is in Pontyclun (CF72), in the Rhondda Cynon Taf local authority area, Wales. Show CF72 8AQ on a map.
Other trade companies in CF72
- J Langdon Developments LtdBuilders
- Fortis DS LtdMachinery repair and installation
- Barcombe Commercial & Property Services LtdFinishing trades
- JMP Gas Plumbing and Heating LtdPlumbers and heating engineers
- Mgreenroofing LtdRoofers
- Vent-Ways LtdInstallers
- O&R Autohaus LimitedMechanics and garages
- Acer Garden Retreats LtdJoiners and carpenters
What happens if Index Waterproofing Technology UK 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 07308319
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 July 2010 (16 years ago)
- Registered office
- 27 Danygraig Drive, Talbot Green, Pontyclun, CF72 8AQ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 6 March 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 Pontyclun
Other active specialist construction companies registered in Pontyclun.
- Jordan Civils (Wales) Ltd2012
- Joshua Stratford Health & Safety Ltd2024
- Medusa Construction Cosmetics Limited2012
- Nautilus Concrete & Flooring Ltd2023
- Nautilus Roofing & Exteriors Ltd2013
- Ourd Holdings Ltd2019
- Precision Property & Vehicle Services Ltd2025
- Pro Point Group Limited2025
All specialist construction companies in Pontyclun · All trades in Pontyclun · Specialist contractors across the UK
Frequently asked questions
When are Index Waterproofing Technology UK Ltd's accounts due?
Index Waterproofing Technology UK Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Index Waterproofing Technology UK Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Index Waterproofing Technology UK Ltd still trading?
Index Waterproofing Technology UK 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 Index Waterproofing Technology UK Ltd do?
Index Waterproofing Technology UK Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Index Waterproofing Technology UK Ltd?
Index Waterproofing Technology UK Ltd was incorporated on 8 July 2010, 16 years ago.
What is the penalty if Index Waterproofing Technology UK 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 Index Waterproofing Technology UK 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.