Just came home from watching it. A rather straight yarn, very pretty imagery, some rather fun scenes and decent use of witty dialogue. 1960s' Berlin looks very convincing. Very nice toys including a convincing Wessex and some CGI (I assume) Sea Vixens, if I'm not mistaken.
Not too fond of the, at many times, hectic camera work. It clashes too much with the retro aesthetics - I would have preferred an overall pacing akin to the old Bond movies.
Still, very inspiring, with a distinct 7TV flavour to it.