Regeneration, adapted for the stage by Nicholas Wright, forms the final and centrepiece of the Royal & Derngate's programme to commemorate the centenary of the First World War. Based on Pat Barker's 1991 novel, it tells the story of several characters experiences in Craiglockhart Hospital following being immobilised for various reasons from the trenches. Among these are notable real-life characters such as the highly decorated war poet Siegfried Sassoon, his doctor Captain Rivers and Sassoon's fellow poet Wilfred Owen. Of these three characters, Stephen Boxer as Rivers is by far the stronger performance, giving a sentimental and caring portrayal with more than a hint of humour in his delivery. As Sassoon and Owen, Tim Delap and Garmon Rhys respectively, they have less to do in their somewhat and surprising one dimensional characters on stage. They only really feel solid characters when they are together on stage,...