The critical response to Saturday must be making Ian McEwan a very happy man (not that his virtually unassailable position as Britain’s leading novelist has been in doubt). While contemporaries (and rivals) Martin Amis and Will Self have had much more hit-or-miss records recently, each new McEwan novel gleans a host of plaudits, and Atonement has been generally hailed as his masterpiece. Saturday may not enjoy quite such acclaim, but it’s a remarkably accomplished piece of work, as richly drawn and characterised as anything he has written.