The author has got in touch to tell me that:
The 304-page, full-colour guide book includes 689 fascinating British and Irish music locations and the stories behind them. Written and researched by former Guinness Book of British Hit Singles & Albums editor David Roberts, the book provides instructions on how to find each place of Rock and Pop pilgrimage, plus extensive lists of the birthplaces of every major musician.
The sound mirrors entry says:
The Dungeness coastal landscape is shaped by the strange architectural splendour of the sound mirrors that are featured as cover artwork on Turin Brakes’ Ether Song album and hit single ‘Long Distance’. Constructed as a Royal Air Force early warning system for incoming aircraft, the Denge mirrors are often referred to as ‘Listening Ears’ and have also featured in The Prodigy video for ‘Invaders Must Die’ and Blank & Jones‘ Monument album cover and video for ‘A Forest’.