ACKNOWLEDGEMENTS

I would like to acknowledge the helpful assistance received in the Imperial War Museum, the Public Record Office, and above all in the Ministry of Defence, Air Historical Branch. I am particularly grateful to Sebastian Ritchie for casting an expert eye over the text at very short notice. I would like to thank Tony Mansell for sorting out figures on casualties, and Richard Simpson of the RAF Museum, Hendon, for help on some technical issues. Simon Winder at Penguin was the inspiration behind the subject and its format. Kate Parker has been a scrupulous editor. Any errors and misjudgements that remain are, as ever, my own responsibility. To Kim, Alexandra and Clementine my love and thanks.