Contents

Foreword

Preface

Acknowledgements

Abbreviations

Chapter 1: A Life in Signals Intelligence

Chapter 2: British Sigint in World War One

Chapter 3: Between the Wars

Chapter 4: Bletchley Park

Chapter 5: Berkeley Street

Chapter 6: Cut Loose

Epilogue

Appendices

Appendix 1: Charter Documents for Room

Appendix 2: GC&CS Staff, November 1919

Appendix 3: Code Text of the Zimmermann Telegram

Appendix 4: Examples of Room 40 Decrypts with AGD’s Initials

Appendix 5: How News was Brought from Warsaw at the End of July 1939

Appendix 6: Approximate Strength of GC&CS on Move to War Station, August 1939

Appendix 7: Naval Sigint in the UK, December 1940

Appendix 8: Military Sigint in the UK, December 1940

Appendix 9: Air Force Sigint in the UK, December 1940

Appendix 10: GC&CS Diplomatic and Commercial Sections (Civil) Structure in 1944

Appendix 11: The McCormack Report

Appendix 12: Denniston/Friedman Correspondence

Notes

Bibliography