- Company number
- 11032465
- Incorporated
- 25 Oct 20178 years trading
- Registered office
- 25 Commercial Road, Resolven, Neath, SA11 4HF
- Nature of business
- Construction of commercial buildings
Core Seal Limited is a 8-year-old private limited company registered in Neath, company number 11032465, one of 32 building contractors in Neath. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 down £66K (-292.7%) on the year before, to -£43K.
- Current assets of £4,133 against £46K owed within a year: 0.1 times cover.
- 7 employees on average, down from 10 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | -£43K | £4,133 | £46K | 7 | |
| 31 Oct 2024 | £23K | £2,556 | £59K | £34K | 10 |
Where Core Seal Limited is registered
The registered office is in Neath (SA11), in the Neath Port Talbot local authority area, Wales. Show SA11 4HF on a map.
Other trade companies in SA11
- A to Z Roofing & Property Maintenance LtdInstallers
- Kalies LtdProperty developers
- Tawe Capital LtdMotor traders
- Alewisindustrial LtdCleaning companies
- MJR Contracting LtdSpecialist contractors
- Joshjones Industrial LtdCleaning companies
- Phillips Roofing & Son LtdRoofers
- D&D Property Developments LimitedProperty developers
What happens if Core Seal 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 11032465
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 October 2017 (8 years ago)
- Registered office
- 25 Commercial Road, Resolven, Neath, SA11 4HF
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 23 November 2025
- Charges (mortgages)
- 2 outstanding of 2 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Neath
Other active building contractors registered in Neath.
- Glamorgan Services Limited1997
- Icc (SW) Ltd2026
- Jones’S Property Solutions Ltd2026
- K&M Building Solutions Ltd2020
- KRP Carpentry & Building Ltd2022
- KRP Renovations Ltd2023
- L.H. Snow & Son Limited1988
- Laken Construction Ltd2025
All building contractors in Neath · All trades in Neath · Builders across the UK
Frequently asked questions
When are Core Seal Limited's accounts due?
Core Seal Limited's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Core Seal Limited's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Core Seal Limited still trading?
Core Seal 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 Core Seal Limited do?
Core Seal Limited is registered under Construction of commercial buildings (SIC 41201).
How old is Core Seal Limited?
Core Seal Limited was incorporated on 25 October 2017, 8 years ago.
What is the penalty if Core Seal 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 Core Seal 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.