I've seen Raft in many movies, and just don't get why people liked him so much. His acting is wooden, not just here, but in many roles. He's not particularly handsome nor charismatic. But whatever.
I like this movie because it's what we yanks consider a hollywood genre, but set and shot in the UK. It's refreshing to see a procedural done in another country. Similar, but different. And plenty of on location and street shots, not just endless soundstages. The camerawork even has a few imaginative moments.
But it's not special in any other way. I'm pretty good with british acting names and faces, and I don't recognize one here. It's rare that I recognize only one performer in a movie, in this case, Raft. I didn't previously know Sally Gray. I found it hard not to watch her. To me she looks much more american than british for that time period.
This could be a good movie for an update, a remake. It's got good bones.