Diamonds might not be forever in a film centred around a massive, ticking bomb on a building site, which is equal parts violent and silly Diamonds might not be forever in a film centred around a massive, ticking bomb on a building site, which is equal parts violent and silly T here are some lively if borderline ridiculous shenanigans in this London heist thriller from screenwriter Ben Hopkins and director David Mackenzie, brazening out its innate silliness with chutzpah, heavily researched