We had a leak inside our Boiler which was first noticed on a Sunday. It is very difficult to contact anyone on a Sunday unless it is a Gas Emergency. However, I did manage to book a Appointment using the Online Booking System for two and a half weeks later! The following Wednesday we noticed the leak was getting worse so I tried the 'Live chat' function and spoke with Prathamesh. He arranged for an Engineer to visit at 8pm that night, the relevant part was ordered and the Engineer came back at 10.30 the following morning and the leak was fixed. Think I was very lucky reading the reviews on here.