I empathise with all the other people on here who have had bad experiences with Everest. To cut my long story short...I had an installation done just before Christmas 2019 and had reasons to need to make a formal complaint about the poor workmanship. I was promised that my complaint would be dealt with within 8 weeks. It was not. The customer service I received was appalling...just a load of missed appointments, delays and empty promises. This took us to mid- March 2020...and then we had lockdown. During this time Everest went into administration and, through this process, have conveniently been able to wash their hands of all their previous customers. Our guarantees and life-time warranty are null and void. Most annoying of all, they have restarted trading under a new name, Everest 2020. Clearly, it suits them very nicely to start with a clean sheet...and not have to face their responsibilities towards their customers from before lockdown. AVOID THIS COMPANY.