Spooks/MI-5 Question

OK. So Wikipedia claims the original episodes were 59 minutes, and that the A&E/BBC America reairings were cut down to 45 minutes. That would be poo and I don't want that. The Netflix streaming versions are listed at 52 minutes. I don't know if I want that or not. Someone who knows, please tell me what the truth is. IMDB is not helping out at all.