- Companies
- Plumbers and heating engineers
- Waterlooville
- Reactive Mechanical Services Ltd
Reactive Mechanical Services Ltd
- Company number
- 09417139
- Incorporated
- 2 Feb 201511 years trading
- Registered office
- 12 Columbine Way, Clanfield, Waterlooville, Hampshire, PO8 0WJ
- Nature of business
- Plumbing, heat and air-conditioning installation
Reactive Mechanical Services Ltd is a 11-year-old private limited company registered in Waterlooville, company number 09417139, one of 133 plumbing and heating companies in Waterlooville. Its next accounts are due at Companies House on 1 May 2027, and the CT600 for the period to 1 August 2026 is due at HMRC on 1 August 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 up £30K (+96.3%) on the year before, to £62K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 1 Aug 2025 | £62K | £0 | £6,101 | 0 | |
| 1 Aug 2024 | £31K | £252 | £6,101 | 0 | |
| 1 Aug 2023 | £25K | £2,095 | £5,709 | 0 | |
| 1 Aug 2022 | £13K | £1,440 | £10K | 0 | |
| 1 Aug 2021 | £12K | £5,129 | 0 | ||
| 1 Aug 2020 | £12K | £0 | £5,629 | 0 | |
| 28 Feb 2019 | £9,775 | £3,300 | £5,574 | ||
| 28 Feb 2018 | £3,990 | £5,260 | £4,245 | ||
| 28 Feb 2017 | £6,242 | £3,845 | £600 | ||
| 28 Feb 2016 | -£3,558 | £952 | £8,813 | £600 |
Where Reactive Mechanical Services Ltd is registered
The registered office is in Waterlooville (PO8), in the East Hampshire local authority area, South East. Show PO8 0WJ on a map.
Other trade companies in PO8
- South Coast Marine LtdMachinery repair and installation
- Le Petit Electrical LtdElectricians
- Pure Construction (South) LimitedBuilders
- Carecomply Solutions LtdFacilities management
- Southcoast Development Group LtdProperty developers
- Hughes Garden Maintenance LtdCleaning companies
- Partridge Painting & Decorating LtdPainters and decorators
- Candour Maintenance Management LtdFinishing trades
What happens if Reactive 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 1 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 May 2027 to 1 Jun 2027 | £150 |
| 1 to 3 months late | 2 Jun 2027 to 1 Aug 2027 | £375 |
| 3 to 6 months late | 2 Aug 2027 to 1 Nov 2027 | £750 |
| More than 6 months late | From 2 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 2 Aug 2027 | £200 |
| 3 months late | 1 Nov 2027 | another £200 |
| 6 months late | 1 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 1 Aug 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
- 09417139
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 February 2015 (11 years ago)
- Registered office
- 12 Columbine Way, Clanfield, Waterlooville, Hampshire, PO8 0WJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 1 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 1 August 2025
- Last confirmation statement
- 2 February 2026
- Charges (mortgages)
- 0 outstanding of 2 registered
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 Waterlooville
Other active plumbing and heating companies registered in Waterlooville.
- Reeleyt Heating Limited2017
- Rivair Air Conditioning Limited2023
- Rock Zero Group Ltd2016
- S Giles Bathrooms Limited2022
- S R M Gas Solutions Ltd2017
- Scott Ware Home Care Limited2025
- Sge Phoenix Ltd2015
- Shaikh Plumbing Limited2025
All plumbing and heating companies in Waterlooville · All trades in Waterlooville · Plumbers and heating engineers across the UK
Frequently asked questions
When are Reactive Mechanical Services Ltd's accounts due?
Reactive Mechanical Services Ltd's next accounts are due at Companies House by 1 May 2027 (in 201 days), covering the period to 1 August 2026.
When is Reactive Mechanical Services Ltd's CT600 due?
The CT600 for the period to 1 August 2026 is due at HMRC by 1 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 2 May 2027.
Is Reactive Mechanical Services Ltd still trading?
Reactive 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 Reactive Mechanical Services Ltd do?
Reactive Mechanical Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Reactive Mechanical Services Ltd?
Reactive Mechanical Services Ltd was incorporated on 2 February 2015, 11 years ago.
What is the penalty if Reactive 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 Reactive 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.