- Companies
- Plumbers and heating engineers
- Oxford
- N. & S. Connolly Limited
N. & S. Connolly Limited
- Company number
- 06042251
- Incorporated
- 5 Jan 200719 years trading
- Registered office
- 5 South Parade, Summertown, Oxford, OX2 7JL
- Nature of business
- Plumbing, heat and air-conditioning installation
N. & S. Connolly Limited is a 19-year-old private limited company registered in Oxford, company number 06042251, one of 62 plumbing and heating companies in Oxford. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for N. & S. Connolly LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £41K (+113.3%) on the year before, to £77K.
- Current assets of £91K against £21K owed within a year: 4.3 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £77K | £91K | £21K | 3 | |
| 31 Jan 2024 | £36K | £67K | £35K | 3 |
Where N. & S. Connolly Limited is registered
The registered office is in Oxford (OX2), in the Oxford local authority area, South East. Show OX2 7JL on a map.
Other trade companies in OX2
- Construction Concierge LimitedBuilders
- Crest Maintenance Oxford LtdPainters and decorators
- Oxford Design & Build LimitedBuilders
- Paradisus Gardens LimitedLandscapers and gardeners
- Thumb and Thimble LtdRepair services
- Aj Berry LtdElectricians
- Ox Power and Renewables LtdElectricians
- Macpro GW LimitedProperty developers
Also registered at this address
20 other companies use the same registered office as N. & S. Connolly Limited.
- Burnham Investments LimitedProperty developers
- Control Lighting LimitedElectricians
- Damprot Renovations LimitedSpecialist contractors
- DF Leadwork LimitedRoofers
- Douglas L.Charlett (Tyres) LimitedMotor traders
- Haller Enterprises LimitedProperty developers
- Lemontree Property Improvements LtdCivil engineering
- Lilas Project LimitedProperty developers
- Linkside Homes LimitedBuilders
- Mark Archer Building Services LtdFinishing trades
- Nuffield Garage LimitedMotor traders
- Oxford City Properties LimitedProperty developers
- P. J. East LimitedPainters and decorators
- Plummer Property Consulting LtdProperty developers
- Springfield Now LimitedBuilders
- Standard Building LtdProperty developers
- The Oxford Window Co LtdJoiners and carpenters
- Titus Estates LimitedBuilders
- UK Grinding and Machine Services LimitedMachinery repair and installation
- White City Construction LimitedProperty developers
What happens if N. & S. Connolly 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 06042251
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 January 2007 (19 years ago)
- Registered office
- 5 South Parade, Summertown, Oxford, OX2 7JL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 5 January 2026
- Previous names
- N. S. Connolly & Son Limited (until 30 Jan 2007)
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Oxford
Other active plumbing and heating companies registered in Oxford.
- Ne Plumbing & Heating Solutions Ltd2018
- Nexa Energy Limited2024
- Olma Services Ltd2024
- Oxford HVAC Limited2026
- Oxford Mechanical Services Limited2005
- Oxford Renew Tech Heating Limited2023
- Oxheat Service Ltd2023
- Oxon Plumbing Limited2025
All plumbing and heating companies in Oxford · All trades in Oxford · Plumbers and heating engineers across the UK
Frequently asked questions
When are N. & S. Connolly Limited's accounts due?
N. & S. Connolly Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is N. & S. Connolly Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is N. & S. Connolly Limited still trading?
N. & S. Connolly 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 N. & S. Connolly Limited do?
N. & S. Connolly Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is N. & S. Connolly Limited?
N. & S. Connolly Limited was incorporated on 5 January 2007, 19 years ago.
What is the penalty if N. & S. Connolly 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 N. & S. Connolly 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.