Atlantic is not worth considering, I've spoken to many of their guys, not happy, no money and no leave. When the market improves they are in trouble.
That's standard for Atlantic!
They'll always have a relatively high turnover of staff for all the above reasons. If your mates aren't happy they can always leave . . . . oh hang on, there's no jobs out there! In that case wind your necks in and get on with it as there will always be plenty of folk out there to take their place . . . .