- Companies
- Plumbers and heating engineers
- Bicester
- O & M Mechanical Services Ltd
O & M Mechanical Services Ltd
- Company number
- 13255276
- Incorporated
- 9 Mar 20215 years trading
- Registered office
- 11 Partridge Chase, Bicester, OX26 6XF
- Nature of business
- Plumbing, heat and air-conditioning installation
O & M Mechanical Services Ltd is a 5-year-old private limited company registered in Bicester, company number 13255276, one of 45 plumbing and heating companies in Bicester. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £285 (-31.5%) on the year before, to -£1,191.
- Net assets rose in 0 of 3 year-on-year comparisons on record.
- Current assets of £16K against £20K owed within a year: 0.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£1,191 | £16K | £20K | 2 | |
| 31 Mar 2024 | -£906 | £17K | £27K | 2 | |
| 31 Mar 2023 | £1,502 | £14K | £21K | 2 | |
| 31 Mar 2022 | £4,903 | £12K | £18K | 2 |
Where O & M Mechanical Services Ltd is registered
The registered office is in Bicester (OX26), in the Cherwell local authority area, South East. Show OX26 6XF on a map.
Other trade companies in OX26
- SR Agri LtdMachinery repair and installation
- Gal Construct LtdBuilders
- Journey Motorworks LtdMotor traders
- JCD Electrical Solutions LtdElectricians
- Woodlands Farmhouse LtdProperty developers
- Chrisodel Holdings LtdProperty developers
- G Tree Surgery LtdLandscapers and gardeners
- JCC Fire & Security LtdSpecialist contractors
What happens if O & M Mechanical Services Ltd 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 13255276
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 March 2021 (5 years ago)
- Registered office
- 11 Partridge Chase, Bicester, OX26 6XF
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 8 March 2026
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 Bicester
Other active plumbing and heating companies registered in Bicester.
- Od Plumbing & Heating Ltd2021
- Ox Heating & Cooling Ltd2025
- Ox Property Services Ltd2017
- Paul Miles Plumbing & Heating Limited2011
- R&F Renewables Limited2025
- Revs Property Maintenance Ltd2014
- Richard Owen Plumbing and Heating Limited2014
- S V Carter Limited2005
All plumbing and heating companies in Bicester · All trades in Bicester · Plumbers and heating engineers across the UK
Frequently asked questions
When are O & M Mechanical Services Ltd's accounts due?
O & M Mechanical Services Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is O & M Mechanical Services Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is O & M Mechanical Services Ltd still trading?
O & M Mechanical Services Ltd 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 O & M Mechanical Services Ltd do?
O & M Mechanical Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is O & M Mechanical Services Ltd?
O & M Mechanical Services Ltd was incorporated on 9 March 2021, 5 years ago.
What is the penalty if O & M Mechanical Services Ltd 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 O & M Mechanical Services Ltd 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.