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- Plumbers and heating engineers
- St Albans
- O'Donovan Heating Services Limited
Company profile · Plumbers and heating engineers
O'Donovan Heating Services Limited
O'Donovan Heating Services Limited is a 10-year-old private limited company registered in St Albans, company number 10030407, one of 18 plumbing and heating companies in St Albans. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 28 February 2025, as filed at Companies House.
O'Donovan Heating Services Limited over the years
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 £3,022 (-30.5%) on the year before, to £6,885.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £14K against £8,893 owed within a year: 1.6 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 Feb 2025 | £6,885 | £457 | £14K | £8,893 | 2 |
| 29 Feb 2024 | £9,907 | £5,577 | £19K | £9,506 | 2 |
| 28 Feb 2023 | £6,071 | £2,032 | £14K | £8,656 | 2 |
| 28 Feb 2022 | £555 | £1,583 | £1,583 | £1,632 | 2 |
| 28 Feb 2021 | £2,573 | £4,166 | £1,849 | 2 | |
| 29 Feb 2020 | £1,694 | £4,946 | £3,084 | 2 | |
| 28 Feb 2019 | £1,189 | £3,201 | £2,699 | ||
| 28 Feb 2018 | £974 | £4,125 | £4,019 | ||
| 28 Feb 2017 | £2,322 | £8,696 | £6,274 |
Where O'Donovan Heating Services Limited is registered
The registered office is in St Albans (AL2), in the St Albans local authority area, East of England. Show AL2 2NR on a map.
Other trade companies in AL2
- Keris Ventures Limited LimitedFinishing trades
- Kelly Brickwork LimitedBuilders
- Aurora Electrical LtdElectricians
- Pillars Motors LimitedMotor traders
- Pride & Joy LtdFinishing trades
- Rowantree Developments Group LimitedProperty developers
- Herts Groundworks and Civils LtdGroundworks and demolition
- Meristem Developments LtdProperty developers
What happens if O'Donovan Heating 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 10030407
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 February 2016 (10 years ago)
- Registered office
- 14 Upton Close, Park Street, St Albans, Hertfordshire, AL2 2NR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 26 February 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 St Albans
Other active plumbing and heating companies registered in St Albans.
- On Set Plumbing Ltd2026
- Priority Plumbers Ltd2013
- Star Air Conditioning Ltd2021
- V A Building Services Ltd2008
- Walsh Plumbing and Heating Ltd2017
- Watret & Co.Limited1971
- Af Clark Limited2011
- Always Plumbing Services Ltd2020
All plumbing and heating companies in St Albans · All trades in St Albans · Plumbers and heating engineers across the UK
Frequently asked questions
When are O'Donovan Heating Services Limited's accounts due?
O'Donovan Heating Services Limited's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is O'Donovan Heating Services Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is O'Donovan Heating Services Limited still trading?
O'Donovan Heating 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 O'Donovan Heating Services Limited do?
O'Donovan Heating Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is O'Donovan Heating Services Limited?
O'Donovan Heating Services Limited was incorporated on 27 February 2016, 10 years ago.
What is the penalty if O'Donovan Heating 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 O'Donovan Heating 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.