Rapid Response, Reliable Repairs & Clear Pricing.
24/7 Call Out Service Across London.
Quick Local Leak Repair.
Our Local Team Acts Fast To Diagnose The Issue & Get It Fixed In No Time.
EXCELLENT Based on 145 reviews Posted on 1 ATrustindex verifies that the original source of the review is Google. Have had plenty of bad experiences, but this company is the best, fast, no nonsense and gets the work donePosted on Daniele MTrustindex verifies that the original source of the review is Google. I would like to recommend this service: it was quite easy to book and have an appointment in a short term. Armand the plumber was very professional, and I had my gas safety check and my boiler checked in time. Armand was also able to respond to all my questions. So it is a 5 star's evaluation for me.Posted on Shahram PTrustindex verifies that the original source of the review is Google. Recently use this company for my workshop ,excellent service,will use agin in future you. Thank youPosted on Hanna KTrustindex verifies that the original source of the review is Google. Great responce and commendable customer care service ! Armand was willing to support and his manarism was great. Will definitely contiue using his services.Posted on Beata DTrustindex verifies that the original source of the review is Google. Boiler Repair Service Review Today I had my boiler repaired, and I am extremely satisfied with the service. From start to finish, the process was seamless. Armand the engineer was punctual, professional, and highly knowledgeable. He quickly diagnosed the issue, explained the problem in simple terms. The repair itself was efficient, Armand ensured everything was working perfectly before leaving. He even gave me some tips on maintaining the boiler to avoid future problems. Overall, this was a stress-free experience, and I’d highly recommend Armand and his company for any boiler repairs.Posted on YOUMITRA TTrustindex verifies that the original source of the review is Google. Awesome service, I am thoroughly impressed with the service I received from Armand. He was punctual, professional, and extremely thorough. My boiler is now running perfectly, and I feel confident it was fixed correctly. I highly recommend his services!Posted on Lala BTrustindex verifies that the original source of the review is Google. Very Highly recommended. I will use them again! My new boiler was installed like a well drilled operation. Everything done precisely on time and as Armand said it would.Posted on Tudor UTrustindex verifies that the original source of the review is Google. Great service from Onsite Contractors and Pluming Ltd, the boiler was repaired within 2 hours from calling this company. Really greatfull for their outstanding response, been charget a very fair price for the job.I recommend them from my heart. Thank you guys!Posted on Joey BTrustindex verifies that the original source of the review is Google. Rapid response from Armand to a Google Local Services request. Good comms via WhatsApp. Same day attendance. I live in a tricky area for parking but Armand managed that without complaint. Quickly diagnosed and resolved the problem with my heating system, made efficiency improvements, and taught me a few things along the way for future reference. The following morning I had a worsening situation due to air and pressure changes settling in the system overnight (unavoidable) but Armand was responding to my messages from 6:51am and helping me to relay instructions to my tenant in real time to apply a final fix. The heating system is now working incredibly effectively and efficiently. I'm burning hardly any gas to keep the property warm. Gas bill reducing substantially now. As with everything these days, skilled people don't come cheap; you get what you pay for and I would recommend Armand to others.
Rapid Response, Reliable Repairs & Clear Pricing.
24/7 Call Out Service Across London.
Our experienced team handles everything from general heating & plumbing repairs to maintenance, installations and call-outs. Whether it’s a small fix or a larger on-site project, we approach every job with the same attention to detail and commitment to customer satisfaction.
Leaks, bursts, or blockages? Our plumbers respond fast to stop damage and restore your plumbing quickly.
Local plumbers ready to attend quickly for urgent repairs, maintenance, and everyday plumbing issues.
We quickly diagnose and fix drainage problems to keep your plumbing working properly.
4.9
Over 300 Reviews
We reach you within 40 minutes for call-outs, getting help to you fast when time matters most.
We cover all areas of London & Greater London. Our engineers and plumbers are based across North, South, East, and West London, so we can respond quickly no matter where you’re located. We regularly serve homes and businesses in areas such as Westminster, Camden, Islington, Hackney, Greenwich, Croydon, Ealing, Hammersmith, Richmond, and beyond.
We also work in parts of Greater London and nearby areas, depending on the job type and urgency. If you’re not sure whether we cover your postcode, just give us a call, chances are, we do.
Because we have engineers based across the city, we can usually reach you the same day for emergencies. For planned work such as boiler installations, powerflushing, or heating upgrades, we’ll schedule a time that suits you. Our focus is on reliability and coverage, ensuring London homes and businesses have a dependable local team whenever they need us.
Your plumbing system should be checked regularly to keep it working safely and efficiently. Routine inspections help prevent leaks, pipe damage, and unexpected breakdowns, while also reducing the risk of costly repairs in the future.
During a plumbing check, a professional will inspect pipes, fittings, taps, and visible connections, making sure there are no leaks, blockages, or pressure issues. Small problems can often be fixed early before they turn into serious damage.
Yes all our engineers and plumbers are fully certified, trained and Gas Safe registered. This means they’re legally qualified to work on gas appliances, boilers, and central heating systems. Every engineer carries their Gas Safe ID and you can always ask to see it before any work begins.
In addition to Gas Safe certification, our team is experienced in all areas of plumbing, heating, and electrical work. We keep up to date with the latest safety standards and manufacturer training so every job is carried out correctly and safely.
It ensures your system is repaired or installed to the highest standard and guarantees your safety. Whether you need an emergency repair, installation, or inspection, you’ll always get a qualified professional on-site.
Yes we carry out Gas Safety Inspections (CP12 certificates) for landlords across London. If you rent out a property with gas appliances, it’s a legal requirement to have them inspected annually by a Gas Safe registered engineer.
Our team can test all boilers, gas fires and pipework to make sure everything is safe and compliant. Once the inspection is complete, we’ll issue your Gas Safety Certificate straight away, either digitally or in print.
We also offer reminders when your next inspection is due, making it easy to stay compliant without last-minute stress. For landlords managing multiple properties, we can schedule inspections in batches to save time and avoid certificate gaps.
Onsite Contractors and Plumbing Ltd. has been serving London for over 10 years.
We are a locally owned and operated business dedicated to customer satisfaction.
Over 70% of our work comes through referrals, reflecting the trust our customers place in us.
Whether you need plumbing, heating, or gas services, our experienced team is here to help.
As a thank you for using our service, we’re offering: 15% OFF All Plumbing & Gas Services.
Please share with family & friends so they can get 15% OFF as well.