Extremely professional from start to finish. Absolutely no complaints.

Final inspection was carried out this morning, as well as fixing a leaking stopcock. Sean arrived right on time, did the repairs and carried out the inspection as well as answering a few questions. He was both very thorough and efficient; as ever, a really good service from GSL.

Great work from Elliot, Dom and Henry, making the whole experience stress free and giving advice along the way. Great lads and a laugh to have around. Couldn’t have asked for a better team

Excellent quality workmanship installing a combi boiler from Elliot and Billy from start to finish. Very grateful.

Right from the initial contact with GSL communication has been amazing. They explained the process clearly, always at hand to help with any problems, plus they were always resolved professionally and efficiently. All work was completed to a very high standard leaving the place tidy and all rubbish taken away throughout the installation period. All work was undertaken by professional, polite, efficient and tidy teams. The after care team was a great help especially with answering any questions and fixing minor problems that often appear when a job is finished. A massive thank you to the GSL team from first contact to the final aftercare visit and I would highly recommend them. Well done all of you who made the new heating system possible and our lives more comfortable.

Would not trust this company to change a light bulb.Catalogue of complaints and left me loads of cleaning to get my home back to normal.

Great service professional company

Great service thank you

Four guys turned up on Thursday morning and got stuck into the job and the whole operation w as completed by Friday lunch time. No major problems and I was happy to sign everything off.

Customer service was really friendly and helpful the heating engineers were all very friendly and great at their jobs I am very happy with my new heating system and would recommend to everybody