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- Keeping Mechanical Services Ltd
Company profile · Plumbers and heating engineers
Keeping Mechanical Services Ltd
Keeping Mechanical Services Ltd is a 5-year-old private limited company registered in Southsea, company number 13442922, one of 25 plumbing and heating companies in Southsea. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 30 June 2025, as filed at Companies House.
Keeping Mechanical Services Ltd 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 up £1,133 (+78.4%) on the year before, to £2,578.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £7,715 against £9,293 owed within a year: 0.8 times cover.
- 1 employee 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £2,578 | £796 | £7,715 | £9,293 | 1 |
| 30 Jun 2024 | £1,445 | £264 | £2,818 | 1 | |
| 30 Jun 2023 | -£2,463 | £5,809 | £12K | 2 | |
| 30 Jun 2022 | -£4,019 | £18K | £22K | 4 |
Where Keeping Mechanical Services Ltd is registered
The registered office is in Southsea (PO4), in the Portsmouth local authority area, South East. Show PO4 8DE on a map.
Other trade companies in PO4
- Prestiige LtdMechanics and garages
- Portsea Homes LimitedProperty developers
- Elite Building Services (Portsmouth) LtdBuilders
- G Form Drylining LimitedPlasterers
- Solent Sales Haulage & Storage LtdMotor traders
- Koko Construction LtdBuilders
- Chase RCS LtdCivil engineering
- Proper Job Handyman LtdFinishing trades
What happens if Keeping 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 13442922
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 June 2021 (5 years ago)
- Registered office
- 48 Wimborne Road, Southsea, PO4 8DE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 21 May 2026
- Previous names
- Keeping & Morgan Plumbing and Heating Ltd (until 20 Jul 2022)
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 Southsea
Other active plumbing and heating companies registered in Southsea.
- Newport Plumbing & Heating Limited2002
- P.M Gas Heating & Plumbing Limited2018
- PCS Airtech Ltd2025
- Pompey Plumb Ltd2019
- Premheat Limited2021
- R-Gas Heating Ltd2023
- R.C.N Gas Ltd2024
- Southern Counties Heating & Plumbing Ltd1999
All plumbing and heating companies in Southsea · All trades in Southsea · Plumbers and heating engineers across the UK
Frequently asked questions
When are Keeping Mechanical Services Ltd's accounts due?
Keeping Mechanical Services Ltd's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Keeping Mechanical Services Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Keeping Mechanical Services Ltd still trading?
Keeping 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 Keeping Mechanical Services Ltd do?
Keeping Mechanical Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Keeping Mechanical Services Ltd?
Keeping Mechanical Services Ltd was incorporated on 7 June 2021, 5 years ago.
What is the penalty if Keeping 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 Keeping 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.