London Installations LTD
Sunbury-on-Thames, Middlesex
Checkatrade member since August 201510
Accepts Checkatrade Pay
We guarantee the work for up to £1,000 for 12 months. T&Cs apply
Services
- Emergency Central Heating Repair
- General Plumbing
- Underfloor Heating Installation
- Radiator Installation
- Thermal Dynamics
- Water Leak Detection
- Shower Installation
- Power Flushing
- Plumbing Repairs
- Water Mains Specialist (Pipe Replacement, Moling and Lead Pipes)
- Water Pumps Installation
- Tap Repair
- Blocked Sinks
- Blocked Baths
- Blocked Toilets
- Pipe Fitter
- Emergency Plumber Service
- Bathroom & Kitchen Plumbing
- Radiator Repair
- Radiator Thermostat Valve Installation
- Radiator Thermostat Valve Repair
- Shower Repair
- Underfloor Heating Repair
- Water Pumps Repair
Customer Reviews
Write a review10 /10
Based on 15 reviews over the past 12 months
Quality of work
10
Reliability
10
Communication
10
Reviews (214)
10 Brilliant service
Posted 27 April
Job location: SW13I had a great experience after several unsuccessful call-outs with other plumbers. Marc contacted me the same day I made the request and arrived just a few hours later, which was really impressive. The issue was fully resolved within a day, and he even went above and beyond by helping with additional plumbing concerns. On top of that, he assisted me in contacting support for a new smart thermostat I was installing and handled the whole process with minimal input needed from me. I’ll definitely be using his services again and would highly recommend him to others.- JJeremy T
10 New radiators throughout & a new hot water tank.
Posted 27 March
Excellent work, with great attention to detail, by a team who were clean, tidy, efficient and very polite. It was a pleasure having them do the work. We would recommend London Installations to anyone looking to install or update their central heating systems.Verified reviewerJob location: TW11 10 Professional services
Posted 03 March
Marc has helped sort out boiler issues and a faulty cooker hood. He was able to attend to both in a timely manner and resolved both issues with professionalism. Really appreciated his great communication and explanation of these issues.Verified reviewerJob location: TW16- CCarlos H
10 Installation of a Boiler and central heating
Posted 08 February
Excellent installation. All good finishes. I highly recommend London Installations.Verified reviewerJob location: TW3 10 5* Annual Boiler Service
Posted 16 January
Marc was super friendly, professional and tidy when he came to service my boiler.Verified reviewerJob location: TW1610 Professionalism
Posted 14 December 2025
Marc came and did a service on my boiler. He is reliable and professional in his work. I would recommend him to anyone.Verified reviewerJob location: TW19
Photos
Company Info
Owner
Mr Marc Williamson
Ltd Company
11 years on Checkatrade
VAT Registered
No
LONDON INSTALLATIONS LTD is a professional and reliable service dedicated to providing the highest quality of workmanship and customer satisfaction.
We have years of industry experience and all our work is guaranteed for 12 months.
With good competitive rates and a very high standard of work, our customer reviews show how passionate we are about what we do.
We are fully insured so you can feel confident with us in your home.
We aim to attend all emergencies within 30 mins.
Specialist Services:
- We Cover All Aspects Of Plumbing, Central Heatingand Gas
- Emergency call out work
- Leak Detection
- Installations
- Servicing
- Repairs
- Kitchens & Bathrooms
- System Design
Plumbings & Heating Services:
- Bathroom & Kitchen Plumbing
- Emergency Plumber Service
- General Plumbing
- Blocked Sinks, baths and toilets
- Boiler Installation’s
- Boiler Servicing
- Boiler Repairs
- Radiator Installation and repairs
- Shower Installation and Repairs
- Underfloor Heating Installation and Repairs
- Hole House Repipe
- Emergency Central Heating Repairs,
- Gas Boiler Installations, servicing and repairs
- Electric Central Heating Installation, servicing and repairs
- Power Flushing
- Gas Safety Checks - CP12
Helpful and friendly advice is always available so please feel free to call.
Yours sincerely,
Marc Williamson
London Installations Ltd
Accreditations and awards



This trade passed up to 12 Checkatrade vetting checks
Member since August 2015
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Financial
Qualifications and accreditations
County court judgement
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Customer Reviews
Company trading history
Company duplication
County court judgement
Enhanced business check
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