I got the answers and then checked Brewer's - so I don't think it's essential, Google might have been just as good.
For 42 A, most of the letters were filled in, from other answers, so it wasn't too difficult to get that one. 1 A was slightly trickier - it's NOT a first and second name, rather a title/designation and a name.
PS. I'm being slightly cryptic here, rather than just supplying the answers, as I thought you'd like to finish this off yourself.