Out of touch, lack of innovation, known for their gutter HR tactics
Pros
Good place to learn as it has a sink or swim attitude to new starters. You have to keep yourself afloat or you won't stick around. Not bad if you're young, single and career-focussed, although there are other companies who offer the same opportunities and will appreciate your efforts.
Cons
EY is going through a pretty tough time at present, not meeting their ridiculous self-set targets, so aren't replacing staff who leave (and they're leaving in their droves) and are working their current staff to death. No work:life balance. You will be forced to work all hours and weekends and if that doesn't suit you, HR will bully you into it - not a place for working mothers. They purport to have great benefits, but when you want to use them, they'll give you reasons why they aren't available (including promotions). Office politics like I've never experienced.