I watched the film in the context of a historical study into London and its underworld from the 18th to 20th centuries, so I apologise in advance if this review seems overly academic.
The Krays were a fascinating pair, and this film shows the continuing interest in their lives and crimes, which has continued past their deaths. The film accurately shows the individual quirks and fascinations of the brothers while remaining a drama, rather than a documentary (and there are quite a few about).
The enormous presence of the Krays in London history is proven by the Monty Python sketch on the Pirhana Brothers, Doug and Dinsdale - made a single year after the Krays were imprisoned. If you don't know it, it's worth a look-see.
Martin and Gary Kemp, seasoned performers themselves were chillingly well-cast as the twins, who used the media themselves to promote their place as "Diamond Geezers" in East End London. The Krays themselves served as advisors on the film, with the Kemps visiting them in prison to meet and learn about their role from them.
From what I've read about them, I think the Krays would have liked this film about them, especially that proper brothers - twins, in fact - were playing them.
By the way, the copy of the film I borrowed had a special cover which had a pocket over the name "The Krays" with 'blood' (red fluid) in it. It suited the film and subject matter well - one up for the designers.
