He can't recall much either.
Handover from Alice Perkins was 'a lunch'. Can't recall being told Paula Vennells was a crap CEO presiding over failure to deliver, despite there being cucial BIS documents about this lack of confidence in her as CEO. His feeling was she was 'highly thought of' because she was on the gravy train.
So that's it. He took the role because it's a gravy train job, where no-one ever has to really be accountable (so he thought), and he's displaying this insouciance today.