- Companies
- Specialist contractors
- Newport
- Leighton Carter Insulation Co. Limited
Leighton Carter Insulation Co. Limited
- Company number
- 01104526
- Incorporated
- 27 Mar 197353 years trading
- Registered office
- Leighton Carter Insulation Celtic House, Langland Way, Newport, NP19 4PT
- Nature of business
- Other specialised construction activities n.e.c.
Leighton Carter Insulation Co. Limited is a 53-year-old private limited company registered in Newport, company number 01104526, one of 123 specialist construction companies in Newport. 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 down £147K (-6.2%) on the year before, to £2.2M.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £2.2M against £408K owed within a year: 5.3 times cover.
- 22 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £2.2M | £1.6M | £2.2M | £408K | 22 |
| 31 Mar 2024 | £2.4M | £1.5M | £2.4M | £412K | 22 |
| 31 Mar 2023 | £1.9M | £686K | £1.8M | £201K | 27 |
| 31 Mar 2022 | £1.5M | £470K | £1.5M | £191K | 27 |
| 31 Mar 2021 | £1.3M | £332K | £1.5M | £287K | 21 |
| 31 Mar 2020 | £1.1M | £427K | £1M | £123K | 16 |
Who runs and owns Leighton Carter Insulation Co. Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| L*** C*** | Director | Jan 2013 |
| J*** C*** | Director | Sep 2020 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| J*** C*** | Secretary | Oct 2009 | |
| J*** C*** | Director | Dec 2019 | |
| L*** C*** | Director | Oct 2008 |
Person with significant control
Charges (secured borrowing)
2 of 2 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 |
|---|---|---|
| Lloyds Bank PLC | Outstanding | Jul 2025 |
| Lloyds Bank PLC | Outstanding | Jun 2025 |
Where Leighton Carter Insulation Co. Limited is registered
The registered office is in Newport (NP19), in the Newport local authority area, Wales. Show NP19 4PT on a map.
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- NP-Car Parts LimitedMotor traders
- Reaas Motor Trader LtdMotor traders
- Manuel's Auto Deals LtdMotor traders
- Atabotech Engineering Services LtdCivil engineering
- Homenstone LtdRoofers
- Gem's Cleaning & Declutter Services LimitedCleaning companies
What happens if Leighton Carter Insulation Co. 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
- 01104526
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 March 1973 (53 years ago)
- Registered office
- Leighton Carter Insulation Celtic House, Langland Way, Newport, NP19 4PT
- 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
- 27 September 2026
- Charges (mortgages)
- 2 outstanding of 2 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 Newport
Other active specialist construction companies registered in Newport.
- LJN Construction Ltd2026
- Lkaia Properties Limited2015
- Llanfair Construction Limited2007
- M Collingwood Limited2025
- M.C.M. Construction Limited1992
- M.O.D. Construction Services Limited2021
- Me Lah Group Ltd2019
- Mezex Ltd2020
All specialist construction companies in Newport · All trades in Newport · Specialist contractors across the UK
Frequently asked questions
When are Leighton Carter Insulation Co. Limited's accounts due?
Leighton Carter Insulation Co. 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 Leighton Carter Insulation Co. 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 Leighton Carter Insulation Co. Limited still trading?
Leighton Carter Insulation Co. 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 Leighton Carter Insulation Co. Limited do?
Leighton Carter Insulation Co. Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Leighton Carter Insulation Co. Limited?
Leighton Carter Insulation Co. Limited was incorporated on 27 March 1973, 53 years ago.
Who runs Leighton Carter Insulation Co. Limited?
Leighton Carter Insulation Co. Limited has 2 active directors, the longest-serving appointed in Jan 2013. Their names and service addresses are on the Companies House register.
Who owns Leighton Carter Insulation Co. Limited?
One person or company has significant control of Leighton Carter Insulation Co. Limited: an individual (owns 75% or more of the shares).
What is the penalty if Leighton Carter Insulation Co. 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 Leighton Carter Insulation Co. 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.