The biggest drawback to working as a driver for Avanti is most definitely the Terms and Conditions, or lack thereof - and is why the headline salary is high, the price paid being the selling off of work-life balance.
Examples:
The roster is technically a four day week (8hrs45 average turn length) but all depots other than one link at Polmadie, stuff five days into each of four weeks, to give the fifth week off.
Sundays are committed, there is ZERO extra pay, and the minimum payment is 6 hours, so therefore it's often a struggle to get them covered even by the money men, and as a result it is entirely possible to have three booked Sundays in four weeks, which leaves a grand total of just five rest days over that four week period.
Every few weeks the base roster has a spare week, this is a week where until a few days prior, you have absolutely no idea which day will be your rest day, or what time shifts you will do, as you can be moved to any time at all.
Spare turns are also able to be moved several hours in each direction to meet the needs of the service.
At least one depot (Wolverhampton) has a virtually 24 hour timetable and roster, the last arrival from Euston being 2.30 a.m and the first departure being 4.30 a.m (empty from New St to Euston). Added to which there are two maintenance depots to sign (Oxley and Barton under Needwood), resulting in a lot of antisocial hours and very few day turns, or actual spare turns.
Other depots are not quite as extreme, though Manchester probably comes closest.
On the plus side, few stops, decent trains and a good rest day work agreement, if you've got the energy...