- Companies
- Specialist contractors
- Newcastle upon Tyne
- Karnheath Limited
Karnheath Limited
- Company number
- 01382266
- Incorporated
- 4 Aug 197848 years trading
- Registered office
- 4 Boyd Street, Shieldfield, Newcastle upon Tyne, NE2 1AP
- Nature of business
- Other specialised construction activities n.e.c.
Karnheath Limited is a 48-year-old private limited company registered in Newcastle upon Tyne, company number 01382266, one of 152 specialist construction companies in Newcastle upon Tyne. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £160K (-64%) on the year before, to -£411K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £679K against £1.1M owed within a year: 0.6 times cover.
- 14 employees 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 Sep 2025 | -£411K | £554K | £679K | £1.1M | 14 |
| 30 Sep 2024 | -£251K | £822K | £971K | £1.3M | 14 |
| 30 Sep 2023 | -£349K | £904K | £933K | £1.4M | 14 |
| 30 Sep 2022 | £70K | £841K | £1.5M | £1.5M | 14 |
| 30 Sep 2021 | £161K | £1.1M | £1.8M | £1.7M | 14 |
| 30 Sep 2020 | -£165K | £1.3M | £2.4M | £2.7M | 14 |
| 30 Sep 2019 | £659K | £228K | £858K | £234K | |
| 30 Sep 2018 | £524K | £447K | £691K | £201K | |
| 30 Sep 2017 | £375K | £251K | £562K | £214K | |
| 30 Sep 2016 | £443K | £227K | £521K | £87K |
Public contracts won
Karnheath Limited has 4 public sector contract awards on record; the ones with their own published value total £178K, from 2020 to 2025. Source: Contracts Finder and Find a Tender award notices. For 1 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. 2 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Advance Northumberland Limited2 awards
- Newcastle City Council1 award
- Warmworks1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Newcastle City Council | Supply and Installation of Cavity Wall and Loft Insulation | 19 Aug 2025 | |
| Warmworks | Warmworks - Newcastle Sustainable Warmth Supply Chain Tender | Ceiling, not shown | 23 Nov 2022 |
| Advance Northumberland Limited | NCC848 Whinney Hill Cavity Wall & Loft Insulation | £118K | 9 Mar 2022 |
| Advance Northumberland Limited | NCC346 Ellington Phase 2 - Cavity Wall & Loft Insulation | £61K | 12 Feb 2020 |
Where Karnheath Limited is registered
The registered office is in Newcastle upon Tyne (NE2), in the Newcastle upon Tyne local authority area, North East. Show NE2 1AP on a map.
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What happens if Karnheath 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 01382266
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 August 1978 (48 years ago)
- Registered office
- 4 Boyd Street, Shieldfield, Newcastle upon Tyne, NE2 1AP
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 11 March 2026
- Charges (mortgages)
- 0 outstanding of 1 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 Newcastle upon Tyne
Other active specialist construction companies registered in Newcastle upon Tyne.
- KB Pointing&Brickwork Ltd2025
- Kitchensandbathrooms26 Ltd2026
- KW Site Welding Ltd2026
- L&M Groundworks Limited2023
- Lacosteross Limited2023
- Lifting Logistics UK Limited2013
- LMC Multitrades Ltd2025
- Lom Consultancy Ltd2019
All specialist construction companies in Newcastle upon Tyne · All trades in Newcastle upon Tyne · Specialist contractors across the UK
Frequently asked questions
When are Karnheath Limited's accounts due?
Karnheath Limited's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Karnheath Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Karnheath Limited still trading?
Karnheath 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 Karnheath Limited do?
Karnheath Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Karnheath Limited?
Karnheath Limited was incorporated on 4 August 1978, 48 years ago.
Has Karnheath Limited won public sector contracts?
Yes. Karnheath Limited has 4 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £178K), most recently from Newcastle City Council.
What is the penalty if Karnheath 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 Karnheath 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.