NO1 BRITISH BOILERS LTD
Market Rasen
Checkatrade member since May 2023
Services
- Gas Boiler Installation
- Gas Central Heating Installation
- LPG Central Heating Installation
- Gas Safety Checks - CP12
- Gas Cooker Installation
- Gas Boiler Servicing / Repair
- Smart Thermostats
- LPG Boiler Installation
- Emergency Central Heating Repair
- LPG Central Heating Servicing / Repair
- Gas Central Heating Servicing / Repair
- General Plumbing
- Underfloor Heating Installation
- Radiator Installation
- Unvented Hot Water Cylinder Installation
- Water Supply Pipe Repairs
- 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
- Unvented Hot Water Cylinder Servicing / Repair
- Water Pumps Repair
Customer Reviews
Write a review9.89 /10
Based on 29 reviews over the past 12 months
Quality of work
9.86
Reliability
9.86
Communication
9.96
Reviews (69)
- SSean D
10 Fitted full new boiler system
Posted 26 November 2025
I am a landlord to 9 properties in Skegness ,after being let down and ripped of by some local gas companies,I took the number of the van I was following ,no1 British boilers ltd ,it was to become the best thing I’ve done ,i honestly cannot fault them ,they turned up on time to do the quote ,they advised me which direction to go in with the system,fitted a full new boiler and pipework ,did a absolutely fantastic job with no fuss ,going forward this is the only plumbing/gas firm I will be usingVerified reviewerJob location: PE25 10 New boiler
Posted 22 November 2025
Lee was very fast on coming to quote us for a new boiler. Jack was very professional and knowledgeable, he explained what he was going to do and kept me informed through the process. Once new boiler and hive was installed Jack talked me through how to program and use. Would highly recommend. Thank you Sidney and MichelleVerified reviewerJob location: NG3110 Amazing company
Posted 21 November 2025
Highly recommend!!! Enquired for a quote as we had a 22 year old boiler! Had a call within a few hours of enquiry offering to come out same day to quote! The quote was over £400 cheaper than any others we had received and an offer of a better boiler with longer guarantee! We were booked in so quickly for the work to be done! The team were amazing, high standard of work and very respectful of the house, and even stayed late one night to make sure we got our heating back in good time! Communication is great from Lee and we’ve even signed up to their boiler aftercare plan for peace of mind!Verified reviewerJob location: LN2- MMartin P
10 Boiler service
Posted 20 November 2025
Excellent communication when booking job, punctual engineer, would recommend to anyone needing a gas engineerVerified reviewerJob location: LN2 10 Excellent, Reliable and Professional Service!
Posted 21 October 2025
We would highly recommend Lee and team! We’ve had a new boiler fitted as well as regular heating servicing and maintenance, and the team has always been professional, efficient, and thorough. They’re consistently clean, reliable, and incredibly helpful and kind. Thank you 😁Verified reviewerJob location: LN6- DDan M
10 They sorted out and knew from the beginning what issue was.
Posted 17 October 2025
Very professionalsVerified reviewerJob location: LN4
Photos
Company Info
Owner
Mr Lee Massam
Ltd Company
3 years on Checkatrade
VAT Registered
No
No1 British Boilers offers expertise in all aspects of Heating.
We are a family run business that takes pride in our customers being our top priority on every job- no matter how big or small. Our engineers have over 10 years experience.
We offer a range of services:
- Boiler installation
- Boiler Services
- Landlord Gas Safety Certificates
- Boiler Repairs/Breakdowns (emergency call out available)
- Central Heating System Maintenance and Upgrade
- Central Heating Power Flush
- Hot Water Cylinder Replacement/Repair
We offer free estimates and 24 hr call outs.
We aim to repair or install your boiler in as little as 24hrs.
We are honest and reliable and understand that communication is key throughout. A friendly and professional service every time.
Accreditations and awards

This trade passed up to 12 Checkatrade vetting checks
Member since May 2023
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Customer Reviews
Company trading history
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County court judgement
Enhanced business check
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