- Companies
- Finishing trades
- Harrow
- Aj Waterproofing Services Ltd
Aj Waterproofing Services Ltd
- Company number
- 06015269
- Incorporated
- 30 Nov 200619 years trading
- Registered office
- 63 Charlton Road, Kenton, Harrow, Middlesex, HA3 9HR
- Nature of business
- Other building completion and finishing
Aj Waterproofing Services Ltd is a 19-year-old private limited company registered in Harrow, company number 06015269, one of 251 building finishing companies in Harrow. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £8,799 (+99.7%) on the year before, to £18K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £31K against £18K owed within a year: 1.7 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | £18K | £28K | £31K | £18K | 1 |
| 30 Nov 2024 | £8,822 | £48K | £37K | 1 | |
| 30 Nov 2023 | £9,681 | £47K | £45K | 2 | |
| 30 Nov 2022 | £11K | £35K | £33K | 2 | |
| 30 Nov 2021 | £34K | £29K | £8,245 | 2 | |
| 30 Nov 2020 | £48K | £63K | £30K | 2 | |
| 30 Nov 2019 | £14K | £26K | £30K | 2 | |
| 30 Nov 2018 | £3,445 | £27K | £23K | ||
| 30 Nov 2017 | £3,651 | £24K | £21K | ||
| 30 Nov 2016 | £2,903 | £20K | £27K | £25K |
Where Aj Waterproofing Services Ltd is registered
The registered office is in Harrow (HA3), in the Harrow local authority area, London. Show HA3 9HR on a map.
Other trade companies in HA3
- M&M Team Solutions LimitedCleaning companies
- Asr234 LimitedCivil engineering
- Shine Bright With NV LtdMechanics and garages
- Direct Sparks LtdMachinery repair and installation
- Meral Decoration & Maintenance LtdPainters and decorators
- Add22 LtdCivil engineering
- Floyd Cleaners LimitedCleaning companies
- Amalia&Ioana LimitedBuilders
What happens if Aj Waterproofing Services 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 06015269
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 November 2006 (19 years ago)
- Registered office
- 63 Charlton Road, Kenton, Harrow, Middlesex, HA3 9HR
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 5 September 2026
- Previous names
- Aj Waterproofing Supplies Ltd (until 2 Aug 2019)
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Harrow
Other active building finishing companies registered in Harrow.
- Alldenn Construction Limited2026
- Aman Building Services Limited2015
- Amp Builder Ltd2021
- Apical Constructions Ltd2016
- Arbotech Ltd2023
- Ark Artisan Limited2023
- Arshi Solutions Ltd2024
- Ashjan Limited2010
All building finishing companies in Harrow · All trades in Harrow · Finishing trades across the UK
Frequently asked questions
When are Aj Waterproofing Services Ltd's accounts due?
Aj Waterproofing Services Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Aj Waterproofing Services Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Aj Waterproofing Services Ltd still trading?
Aj Waterproofing Services 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 Aj Waterproofing Services Ltd do?
Aj Waterproofing Services Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Aj Waterproofing Services Ltd?
Aj Waterproofing Services Ltd was incorporated on 30 November 2006, 19 years ago.
What is the penalty if Aj Waterproofing Services 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 Aj Waterproofing Services 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.