A big thank you to all the people I used to go caving with. Thank you to CU Hang Gliding Club and Blooners 2000 Hot Air Balloon Company for helping me see the Yorkshire Dales and the Chiltern Hills from the air. Thanks to the Yorkshire Dales Falconry and Conservation Centre for days out hawking. Thank you to Dr Jo Cooper, curator at the Natural History Museum Bird Group at Tring, for letting me view the awe-inspiring collections, and to Alison Harding for letting me play with the Ornithology Library. Many thanks to Stella Swainston for details of PSU Riot Procedure, shield instruction and equipment, used in my fyrd shield walls. Thanks to Dr Marco de Boni for memorably explaining hand-to-hand combat in between mouthfuls of pizza. Thanks, John Berlyne. Thank you, Mac and Jenny. Above all, love and thanks to Brian, without whom none of this would have been possible.