Heating, plumbing and air conditioning firms to acquire in London
Updated 9 November 2026
Looking to acquire a heating, plumbing or air conditioning firm in London? Firmbase ranks 375 heating, plumbing and air conditioning firms using public company information to help buyers prioritise firms for research and potential outreach. The Approach Score ranks firms using public signals including director age and tenure, ownership, business scale, financial strength and recent changes. These firms are not listed for sale, and the ranking does not indicate that an owner is considering a sale.
The median firm has 7 staff and has been in business for 11 years. Looking beyond London? Explore the full UK list of heating, plumbing and air conditioning firms.
375
Firms
UK 4,196
20%
Every director 55+
UK 19%
41%
Held 75%+ by one person
UK 31%
11
Median years in business
UK 14
7
Median headcount
UK 8
£500k to £1m
Median turnover band
UK £500k to £1m · includes our estimates
The first 25 firms, in Approach Score order
| Rank | Firm | Approach Score | The facts behind the score |
|---|---|---|---|
| 1 | Drain Surgeon Services South Croydon, Surrey | Approach Score 90/100 |
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Company no. 03710610 · Companies House |
| 2 | Ekotherm Coulsdon, Surrey | Approach Score 89/100 |
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Company no. 07482518 · Companies House |
| 3 | Muneris Sutton, Surrey | Approach Score 89/100 |
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Company no. 07035570 · Companies House |
| 4 | Frost-Tech Refrigeration East Lane Business Park, Wembley | Approach Score 83/100 |
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Company no. 09026459 · Companies House |
| 5 | Specific Heat (london) London | Approach Score 83/100 |
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Company no. 07419084 · Companies House |
| 6 | J W Contract Services Bromley, Kent | Approach Score 83/100 |
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Company no. 03799163 · Companies House |
| 7 | N.Y. Maintenance London | Approach Score 82/100 |
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Company no. 04159607 · Companies House |
| 8 | Capital Heating Uxbridge, Middlesex A director sits on 4 or more companies | Approach Score 82/100 |
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Company no. 03021405 · Companies House |
| 9 | Loftus Engineering Ruislip | Approach Score 81/100 |
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Company no. 06598842 · Companies House |
| 10 | Innovation AIR Conditioning and Building Services Croydon | Approach Score 80/100 |
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Company no. 03411438 · Companies House |
| 11 | WPS London | Approach Score 79/100 |
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Company no. 04648679 · Companies House |
| 12 | Powells Plumbing and Heating Belvedere, Kent | Approach Score 79/100 |
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Company no. 08792762 · Companies House |
| 13 | M&M Plumbing Expert London | Approach Score 79/100 |
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Company no. 11789869 · Companies House |
| 14 | Maintracts London | Approach Score 78/100 |
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Company no. 04134448 · Companies House |
| 15 | Elmstead Mechanical Services Romford | Approach Score 78/100 |
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Company no. 01499491 · Companies House |
| 16 | Bell Group London | Approach Score 78/100 |
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Company no. 05197475 · Companies House |
| 17 | West London GAS London | Approach Score 78/100 |
|
| 18 | R Perkins & Sons London | Approach Score 78/100 |
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Company no. 03025689 · Companies House |
| 19 | M J Newton Electrical Contractors Ruislip | Approach Score 77/100 |
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Company no. 03493836 · Companies House |
| 20 | Warm Touch Heating London | Approach Score 77/100 |
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Company no. 03722128 · Companies House |
| 21 | Industrial Siteworks Solutions Mitcham, Surrey A director sits on 4 or more companies | Approach Score 76/100 |
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Company no. 08118453 · Companies House |
| 22 | Greenheat Uxbridge A director sits on 4 or more companies | Approach Score 76/100 | We hold older figures than Companies House
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Company no. 06858928 · Companies House |
| 23 | S. & F. Services Beckenham, Kent | Approach Score 76/100 |
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Company no. 03785322 · Companies House |
| 24 | Bonair London A director sits on 4 or more companies | Approach Score 76/100 |
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Company no. 02391257 · Companies House |
| 25 | JRC Maintenance Essex | Approach Score 75/100 |
More about this firm
Company no. 03780862 · Companies House |
350 more firms are in the list, in Approach Score order.
You're seeing the first 25. Buy all 375 for £799 + VAT, with the facts behind each score, director names, shareholders and financials.
Buy the list of all 375 firms, with director names, ages and shareholders
Each row comes with the facts behind its score, financials with dates and contact details.
What's in the file
One row per firm, in Approach Score order, as Excel + CSV.
It holds the facts behind each score, points for each part of the score, financials with dates, publicly available contact details, where identified, director names and named shareholders.
Some people with significant control appear as Other individual, with no further detail. Director email lookups are not included.
How this list is filtered
- 5 or more staff, from filed headcount or our estimate where none is filed.
- Registered office in London.
How this list is built
The Approach Score ranks firms mainly on public Companies House information about owner tenure and age, ownership, size, financial strength and recent register changes.
Firms with higher scores appear first in each list.
Use the ranking to order research, then check each business directly.
What it does not mean
No firm here is for sale, and the score says nothing about any owner's plans.
At least 95% of the firms where we hold directors had them checked in or after November 2026.
What we do not cover
Regulatory information is not included in this list. Buyers should check the relevant register as part of their due diligence. For gas work, check businesses and engineers on the Gas Safe Register. For relevant refrigeration and air conditioning work, verify company F-gas certification with its issuing body, using registers such as REFCOM Active Certificates.
Why age bands but no people's names
Age bands come from the month and year of birth on Companies House. This page shows no exact ages and no people's names. Both come with the purchased list. The band edges from 45 to 65 are the ages where the score changes. A row shows no age bands when a director's surname is in the firm's name, its group's name or its website. Those directors' ages still count towards the score.
Is this your firm?
You can ask us to take it off every acquisition page, and out of every list we sell after that. Give us your name and work email, and we send you a link to confirm. If your email address is on the firm's own website domain, the firm comes off once you confirm. If it is not, a person reviews your request first. A list already sold stays with its buyer.
To have personal data erased, see our privacy policy.
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The standard Firmbase list
Buy the list of all 375 firms, with director names, ages and shareholders
Each row comes with the facts behind its score, financials with dates and contact details.