A proper novel with credible characters, and a thought provoking plot. Wright's vision of UK in AD 2500 is coherent and believable. He points up how lucky we are in our current affluence and social order, and how fragile that might be. A real "can't put it down" book for me - I was completely immersed in the future for a few days! A small gripe - if you had to pack for a time voyage, sure you take antibiotics, laptop, gun, your money in gold... but why not a radio? With that you'd instantly know if there was any civilisation still intact.