The third Frank Swann book - the setting is wonderfully done - and oddly nostalgic :)
From the Blurb:
It’s the early 1980s: the heady days of excess, dirty secrets and personal favours. Former detective Frank Swann is still in disgrace, working as a low-rent PI. But when he’s offered a security job by the premier’s fixer, it soon becomes clear that someone is bugging the premier’s phone – and it may cost Swann more than his job to find out why.