A couple from US author John McMahon and his P.T. Marsh series.
Marsh is a Georgia cop and is struggling to overcome the loss of his wife and son. I really enjoyed it and was pleased that Marsh manages to set the bottle aside and show his capabilities as a detective. There's a lot of cliches in fiction, not many more than the detective who finds solace in the bottom of a bottle. I think I'll have fun with these next two in the series.
John McMahon's website is here.