I'm not sure about timelines, but my better half works in The City. Interestingly, she tells me that there is an optimistic feeling that commencement of recovery is in sight. For that last year these chaps have been rather melancholy. Of course, these are the same people who managed to get it wrong in the first place.
PS. Crossing with another thread, I recently secured two FI job offers with relative ease. Not exactly airline flying but, in the current environment, it is free flying.