- Companies
- Specialist contractors
- Market Harborough
- Radon Protection UK Limited
Radon Protection UK Limited
- Company number
- 10297854
- Incorporated
- 27 Jul 201610 years trading
- Registered office
- Unit 8 Eckland Lodge, Desborough' RD, Market Harborough, Leicestershire, LE16 8HB
- Nature of business
- Other specialised construction activities n.e.c.
Radon Protection UK Limited is a 10-year-old private limited company registered in Market Harborough, company number 10297854, one of 26 specialist construction companies in Market Harborough. Its next accounts are due at Companies House on 28 April 2027, and the CT600 for the period to 28 July 2026 is due at HMRC on 28 July 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 £3,617 (+8.3%) on the year before, to £47K.
- Net assets rose in 7 of 8 year-on-year comparisons on record.
- Current assets of £91K against £51K owed within a year: 1.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Jul 2025 | £47K | £91K | £51K | 2 | |
| 28 Jul 2024 | £44K | £79K | £44K | 2 | |
| 28 Jul 2023 | £24K | £44K | £29K | 2 | |
| 29 Jul 2022 | £20K | £33K | £27K | 2 | |
| 30 Jul 2021 | £18K | £26K | £8,223 | 2 | |
| 31 Jul 2020 | £6,484 | £10K | £4,136 | 2 | |
| 31 Jul 2019 | £7,638 | £11K | £3,495 | ||
| 31 Jul 2018 | £3,046 | £2,740 | £678 | ||
| 31 Jul 2017 | £56 | £1,255 | £1,199 |
Public contracts won
Radon Protection UK Limited has one public sector contract award on record; the ones with their own published value total £69K (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Northamptonshire Partnership Homes Limited | Radon Pump servicing, testing and repair | £69K | 5 Oct 2026 |
Where Radon Protection UK Limited is registered
The registered office is in Market Harborough (LE16), in the North Northamptonshire local authority area, East Midlands. Show LE16 8HB on a map.
Other trade companies in LE16
- LM Roofing & Ridgeline LtdRoofers
- Mayfil Motor Group LtdMotor traders
- Goldcrest Plumbing LtdPlumbers and heating engineers
- Woodlands L&P LimitedProperty developers
- M.T. Roofing and Building LtdRoofers
- WM Roofing and Guttering LtdRoofers
- Purespace Solutions LtdCleaning companies
- Sudera Group LimitedProperty developers
Also registered at this address
6 other companies use the same registered office as Radon Protection UK Limited.
- Axi-Dent PDR Systems LimitedMechanics and garages
- DKS Flooring LtdFloor and wall tilers
- Interhome (Properties) LimitedProperty developers
- JGD LtdCleaning companies
- Stanley Plumbing Services LtdPlumbers and heating engineers
- TJK Automotive LimitedMotor traders
What happens if Radon Protection UK 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Apr 2027 to 28 May 2027 | £150 |
| 1 to 3 months late | 29 May 2027 to 28 Jul 2027 | £375 |
| 3 to 6 months late | 29 Jul 2027 to 28 Oct 2027 | £750 |
| More than 6 months late | From 29 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Jul 2027 | £200 |
| 3 months late | 28 Oct 2027 | another £200 |
| 6 months late | 28 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Jul 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
- 10297854
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 July 2016 (10 years ago)
- Registered office
- Unit 8 Eckland Lodge, Desborough' RD, Market Harborough, Leicestershire, LE16 8HB
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 28 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 July 2025
- Last confirmation statement
- 21 April 2026
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 Market Harborough
Other active specialist construction companies registered in Market Harborough.
- Riparian Owner Service Ltd1932
- SMC Display & Exhibition Systems Limited2010
- Spitfire Structural Engineering Limited2017
- Sundridge Roadmarking Limited2021
- The Traditional Company (Ironwork) Limited2014
- The Traditional Company (Fabrication) Limited2018
- Timber Restoration Company Limited2004
- TJK Outdoor Living Ltd2018
All specialist construction companies in Market Harborough · All trades in Market Harborough · Specialist contractors across the UK
Frequently asked questions
When are Radon Protection UK Limited's accounts due?
Radon Protection UK Limited's next accounts are due at Companies House by 28 April 2027 (in 196 days), covering the period to 28 July 2026.
When is Radon Protection UK Limited's CT600 due?
The CT600 for the period to 28 July 2026 is due at HMRC by 28 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 April 2027.
Is Radon Protection UK Limited still trading?
Radon Protection UK 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 Radon Protection UK Limited do?
Radon Protection UK Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Radon Protection UK Limited?
Radon Protection UK Limited was incorporated on 27 July 2016, 10 years ago.
Has Radon Protection UK Limited won public sector contracts?
Yes. Radon Protection UK Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £69K), most recently from NORTHAMPTONSHIRE PARTNERSHIP HOMES LIMITED.
What is the penalty if Radon Protection UK 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 Radon Protection UK 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.