- Companies
- Installers
- Thetford
- Kelly Bros. Mechanical Services Limited
Kelly Bros. Mechanical Services Limited
- Company number
- 14258804
- Incorporated
- 27 Jul 20224 years trading
- Registered office
- 3 Pond Loke, Thetford, Norfolk, IP25 7FL
- Nature of business
- Other construction installation; Other specialised construction activities n.e.c.
Kelly Bros. Mechanical Services Limited is a 4-year-old private limited company registered in Thetford, company number 14258804, one of 14 installation companies (insulation, lifts, shutters and similar) in Thetford. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 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 down £11K (-57.2%) on the year before, to £7,991.
- Current assets of £6,857 against £1,134 owed within a year: 6.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £7,991 | £1,147 | £6,857 | £1,134 | 0 |
| 31 Jul 2024 | £19K | £16K | £37K | £18K | 0 |
| 31 Jul 2023 | £28K | £2,166 | £116K | £88K | 0 |
Where Kelly Bros. Mechanical Services Limited is registered
The registered office is in Thetford (IP25), in the Breckland local authority area, East of England. Show IP25 7FL on a map.
Other trade companies in IP25
- Premier Property Maintenance & Renovations LimitedFinishing trades
- STN Engineering LimitedMachinery repair and installation
- N W Howe & Son LtdFinishing trades
- JMS Technical Services LtdElectricians
- HRŌF Group LtdCleaning companies
- SP Automotive Pro LtdMechanics and garages
- Tma Elite Tint LtdMechanics and garages
- MTH Commercial Repairs LtdMechanics and garages
What happens if Kelly Bros. Mechanical Services 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 14258804
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 July 2022 (4 years ago)
- Registered office
- 3 Pond Loke, Thetford, Norfolk, IP25 7FL
- Nature of business
- Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 26 November 2025
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- Kelly & Dwyer Mechanical Services Limited (until 6 May 2025)
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 Thetford
Other active installation companies (insulation, lifts, shutters and similar) registered in Thetford.
- Mason Insulation Ltd2022
- Newbuild Frames Limited1971
- Newrooms (Methwold) Limited2011
- Norfolk Surfacing Ltd2022
- Thetford Windows Ltd2025
- WB Property Maintenance Ltd2015
- Cally Sanders Tiling Ltd2022
- Ccdtec Limited2025
All installation companies (insulation, lifts, shutters and similar) in Thetford · All trades in Thetford · Installers across the UK
Frequently asked questions
When are Kelly Bros. Mechanical Services Limited's accounts due?
Kelly Bros. Mechanical Services Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Kelly Bros. Mechanical Services Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Kelly Bros. Mechanical Services Limited still trading?
Kelly Bros. Mechanical Services 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 Kelly Bros. Mechanical Services Limited do?
Kelly Bros. Mechanical Services Limited is registered under Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999).
How old is Kelly Bros. Mechanical Services Limited?
Kelly Bros. Mechanical Services Limited was incorporated on 27 July 2022, 4 years ago.
What is the penalty if Kelly Bros. Mechanical Services 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 Kelly Bros. Mechanical Services 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.