Bentley Continental GT Speed - How many miles to a full tank of fuel ?

Before I purchased my Bentley, I was trying to find out how many miles were achievable to a full tank of fuel.
All I could find online were MPG figures which just never seem to be accurate.
I did ask several car dealers and a few said "if you have to ask, then maybe you can't afford one" which I thought was total nonsense and obviously not the case !!
As I wanted to use the car as my daily drive, I believed it to be a valid and sensible question to ask.
So, once I bought the car, I thought it may help others if I made this video to finally answer the question, which could potentially help people to decide if a Bentley is an affordable option to own.
If I'm totally honest, the results were far better than I was expecting !!