Absolutely excellent! Billy and co could not have been more friendly and helpful! The quality of their work, their professionalism and their integrity are outstanding. They replaced a boiler for me, removing the old one from the kitchen and putting the new one in the airing cupboard - plus did extensive improvements on the old piping and low pressure problem. And all of it done with enthusiasm and real regard for me as the home owner. It was a pleasure to have them here. I could not recommend them more highly!