These guys are often at my rented house due to my dodgy drains. They are always friendly and fix the problem - have never had to call them straight...
I recently had problems with my shower not draining and Doherty's came around and spent several hours working on it and then they returned the next...
Very quick response to our call when our hot water died. Replaced it the same day. were very clear on different types of hot water systems and help...