- Companies
- Machinery repair and installation
- Colwyn Bay
- D4-Commercial Diving Services Limited
D4-Commercial Diving Services Limited
- Company number
- 08904072
- Incorporated
- 20 Feb 201412 years trading
- Registered office
- 94 Bryn Cadno, Colwyn Bay, LL29 6DW
- Nature of business
- Repair of other equipment
D4-Commercial Diving Services Limited is a 12-year-old private limited company registered in Colwyn Bay, company number 08904072, one of 10 machinery repair and installation companies in Colwyn Bay. Its next accounts are due at Companies House on 23 November 2026, and the CT600 for the period to 23 February 2026 is due at HMRC on 23 February 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 £2,582 (+76.3%) on the year before, to £5,964.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £5,643 against £3,764 owed within a year: 1.5 times cover.
- 1 employee on average, up from 0 the year before.
- 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 |
|---|---|---|---|---|---|
| 23 Feb 2025 | £5,964 | £5,643 | £3,764 | 1 | |
| 23 Feb 2024 | £3,382 | £6,565 | £1,011 | 0 | |
| 23 Feb 2023 | £40K | £50K | £5,663 | 1 | |
| 23 Feb 2022 | £55K | £68K | £7,680 | 1 | |
| 23 Feb 2021 | £26K | £34K | £11K | 1 | |
| 29 Feb 2020 | £21K | £3,021 | £30K | £13K | 1 |
| 28 Feb 2019 | £6,849 | £1,327 | £6,649 | £5,019 | 1 |
| 28 Feb 2018 | £1,034 | £7,829 | £11K | £16K | 1 |
| 28 Feb 2017 | -£22K | £1,288 | £6,935 | £37K | 1 |
| 28 Feb 2016 | -£25K | £926 | £3,621 | £39K |
Where D4-Commercial Diving Services Limited is registered
The registered office is in Colwyn Bay (LL29), in the Conwy local authority area, Wales. Show LL29 6DW on a map.
Other trade companies in LL29
- Minami Solutions LtdCleaning companies
- L & B Maintenance Services LtdCleaning companies
- Mansfield Air Conditioning LtdPlumbers and heating engineers
- Capital Lifecycle Construction Advisory LtdCivil engineering
- HGJ Enterprises LimitedElectricians
- Coastal Roofcare LimitedRoofers
- Mobility Motor Company MMC LtdMotor traders
- CM Surfacing & Landscaping LtdSpecialist contractors
What happens if D4-Commercial Diving Services 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 23 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 24 Nov 2026 to 23 Dec 2026 | £150 |
| 1 to 3 months late | 24 Dec 2026 to 23 Feb 2027 | £375 |
| 3 to 6 months late | 24 Feb 2027 to 23 May 2027 | £750 |
| More than 6 months late | From 24 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 24 Feb 2027 | £200 |
| 3 months late | 23 May 2027 | another £200 |
| 6 months late | 23 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 23 Feb 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
- 08904072
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 February 2014 (12 years ago)
- Registered office
- 94 Bryn Cadno, Colwyn Bay, LL29 6DW
- Nature of business
- Repair of other equipment (SIC 33190)
- Year end
- 23 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 23 February 2025
- Last confirmation statement
- 23 February 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Colwyn Bay
Other active machinery repair and installation companies registered in Colwyn Bay.
- HG Marine Limited2024
- JDC Plant & Engineering Ltd2014
- JSM Energy Solutions Ltd2025
- Mobiles 2026 Limited2026
- Prolec (NW) Ltd2016
- Putter Refurb U.K Limited2021
- Surface Repair Chester North Wales Ltd2017
- Windjam Ltd2018
All machinery repair and installation companies in Colwyn Bay · All trades in Colwyn Bay · Machinery repair and installation across the UK
Frequently asked questions
When are D4-Commercial Diving Services Limited's accounts due?
D4-Commercial Diving Services Limited's next accounts are due at Companies House by 23 November 2026 (in 41 days), covering the period to 23 February 2026.
When is D4-Commercial Diving Services Limited's CT600 due?
The CT600 for the period to 23 February 2026 is due at HMRC by 23 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 24 November 2026.
Is D4-Commercial Diving Services Limited still trading?
D4-Commercial Diving Services 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 D4-Commercial Diving Services Limited do?
D4-Commercial Diving Services Limited is registered under Repair of other equipment (SIC 33190).
How old is D4-Commercial Diving Services Limited?
D4-Commercial Diving Services Limited was incorporated on 20 February 2014, 12 years ago.
What is the penalty if D4-Commercial Diving Services 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 D4-Commercial Diving Services 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.