Reading while travelling.

Wow - I'm impressed! That should be a fabulous experience.

Edited because I just realized you were looking for literature and I was giving advice on travel books. Sorry!

I hope you have a wonderful trip!

Nicholas Crane did 2 degrees west which takes a walk down the meridian. Otherwise, have a search of my tags under genre-travel and location-uk and you get a good list of UK based travel literature - hope that helps!

I've recently read two "Let's travel the length of Britain" books, which I've enjoyed:

Two Feet, Four Paws by Spud Talbot-Ponsonby (ok, ok, so she did the circumference of the island!)

The Longest Crawl by Ian Marchant (he doesn't walk, but it's a great book)

I second Lyzzy's recommend of Two Degrees West!

My sister recently gave me a Once Upon A Time In Great Britain which goes through the location of various children's stories. I have not read much yet but it seems delightful and covers books from Beatrix Potter and AA Milne to Harry Potter and Paddington Bear.

I have also been enjoying Our Island Story which was written as a history of England for children. I use History loosely since it incorporates many mythologies about the island as well Roman, Arthurian, Celtic and others. It has a lot of charm and the chapters are very short so you could dip into certain localities.

One travel book I enjoyed immensely and intend to read again soon was Roger Deakin's Waterlog. How much would be relevant to your route, I don't know.