- Companies
- Installers
- Ilminster
- C K Harwood & Sons Limited
C K Harwood & Sons Limited
- Company number
- 04510223
- Incorporated
- 13 Aug 200224 years trading
- Registered office
- 1 Cornhill, Ilminster, Somerset, TA19 0AD
- Nature of business
- Other construction installation; Other building completion and finishing
C K Harwood & Sons Limited is a 24-year-old private limited company registered in Ilminster, company number 04510223, one of the UK's installation companies (insulation, lifts, shutters and similar). Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £5,974 (+1.4%) on the year before, to £436K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £402K against £143K owed within a year: 2.8 times cover.
- 16 employees on average, up from 15 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 |
|---|---|---|---|---|---|
| 31 May 2025 | £436K | £83K | £402K | £143K | 16 |
| 31 May 2024 | £430K | £67K | £390K | £148K | 15 |
| 31 May 2023 | £342K | £82K | £419K | £175K | 17 |
| 31 May 2022 | £242K | £144K | £416K | £156K | 16 |
| 31 May 2021 | £140K | £120K | £360K | £186K | 15 |
| 31 May 2020 | £159K | £127K | £343K | £146K | 14 |
| 31 May 2019 | £149K | £57K | £257K | £100K | 13 |
| 31 May 2018 | £123K | £52K | £226K | £104K | 18 |
| 31 May 2017 | £140K | £70K | £230K | £105K | 22 |
| 31 May 2016 | £185K | £56K | £260K | £98K |
Public contracts won
C K Harwood & Sons Limited has one public sector contract award on record; the ones with their own published value total £66K (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Somerset Council | Herne View Primary School - Silver Street Campus - Various Repairs to Block A and Block B | £66K | 12 Jun 2026 |
Where C K Harwood & Sons Limited is registered
The registered office is in Ilminster (TA19), in the Somerset local authority area, South West. Show TA19 0AD on a map.
Other trade companies in TA19
- G.H Autoglass LtdMechanics and garages
- Ilminster Land LtdProperty developers
- Roofar LimitedRoofers
- HW Aviation Solutions LtdCleaning companies
- Blackdown Carpentry LtdBuilders
- H.Trotter Electrical LimitedElectricians
- D & SW Development LtdBuilders
- Langford Carpentry LimitedJoiners and carpenters
Also registered at this address
12 other companies use the same registered office as C K Harwood & Sons Limited.
- Bubbles & Suds LimitedCleaning companies
- Capland Developments LimitedProperty developers
- Classic Jet Heritage LtdSpecialist contractors
- Giles Motors LimitedMechanics and garages
- Global Interiors LimitedFinishing trades
- Luke Grafton Stonemason LimitedSpecialist contractors
- Marshall James Garden Development LimitedLandscapers and gardeners
- Millwood (South West) LimitedBuilders
- Morgan Sweet LimitedBuilders
- Packham Thatchers LimitedRoofers
- Rowswell Construction LimitedBuilders
- Tratt Brothers (Master Thatchers) LimitedRoofers
What happens if C K Harwood & Sons 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 04510223
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 August 2002 (24 years ago)
- Registered office
- 1 Cornhill, Ilminster, Somerset, TA19 0AD
- Nature of business
- Other construction installation (SIC 43290)
Other building completion and finishing (SIC 43390) - Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 13 August 2026
- Charges (mortgages)
- 3 outstanding of 3 registered
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Ilminster
Other active installation companies (insulation, lifts, shutters and similar) registered in Ilminster.
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Frequently asked questions
When are C K Harwood & Sons Limited's accounts due?
C K Harwood & Sons Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is C K Harwood & Sons Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is C K Harwood & Sons Limited still trading?
C K Harwood & Sons 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 C K Harwood & Sons Limited do?
C K Harwood & Sons Limited is registered under Other construction installation (SIC 43290); Other building completion and finishing (SIC 43390).
How old is C K Harwood & Sons Limited?
C K Harwood & Sons Limited was incorporated on 13 August 2002, 24 years ago.
Has C K Harwood & Sons Limited won public sector contracts?
Yes. C K Harwood & Sons Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £66K), most recently from Somerset Council.
What is the penalty if C K Harwood & Sons 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 C K Harwood & Sons 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.