Is Max Hastings regarded as a reputable historian?

Question

If so, why does he write for the Daily Mail, a downmarket, pretentious, reactionary British tabloid.

Answer 1

Yes, I would say so, though I found his account of the Korean War a bit confusing at times.
Lots of better historians have written for worse papers, you know. They need to pay the bills like the rest of us.

Answer 2

Yes - he is. He still has to earn money when he's not writing history.