Anyone mention the 'Rivers of London' series by
Ben Aaronovitch yet? I'm just now reading the first ('Rivers of London' (UK)/'Midnight Riot' (US)) and I like it so far. Young London cop finds out magic is real and gets assigned to a DI who is a wizard and 'not as young as he looks' (not as yet further explained :-))
The description was 'What if Harry Potter grew up and joined the fuzz' and doesn't fit
that well, but gives some idea. Dresden Files or Iron Druid fans will like it, I think.