The book describes this as "The best walk in the Southeast! A dramatic cliff walk passing Cuckemere Haven, the Seven Sisters and Beachy Head as the South Downs meets the sea. Ends with Eastbourne's promenade and pier."
I must admit that this was the first time I had ever had such a long and tiring walk. It took us almost 8 hours to complete it and I was so knackered after and still recovering at the time of writing this. :)
On the good side, I got some nice pictures of the incredible scenery.