Watched it just now to wind down from 17 Boxing Day guests. Liked it. Maybe a fraction long but the time was generally well used. I get what Mr Smith means about a 70s nostalgia angle, but even that wasn't too badly done. Basically a decent intelligent script, pretty flawlessly acted by all. And entertaining.

Edit: just spotted that I echoed the flawless idea. Probably because that's what it was.