For people who have paid for a premium ticket - bussing is completely unacceptable and dishonest. Here's why.
One of the great benefits of the premium ticket is getting off the plane quickly, arriving further up the Border queue and on to your destination, hopefully dry and not windblown and disheveled.
With a bus you get wet and windblown and get to spend extra time on the bus by virtue of being first off. As more and more people get crammed in you get pushed and shoved further away from the door and the people who get on last get off first and gain the benefits that the premium passenger has paid for but not received.
Also whilst on the subject of bussing....how is that you are breaking the law by not wearing a seatbelt whilst taxying carefully in the aircraft and whilst seated and yet when you are careering round bends on the same apron stood up on a bus, safety comes a distant second to expediency and cost? I've seen a couple of nasty falls in such circumstances.
Not saying this is a Manchester thing - most airports are guilty.