Here are some websites from people I met on the trip and other cycle tourists:
Nino - www.grindimwind.ch (in German but lots of pictures)
I cycled with Nino from Austria to Istanbul and he was great company.
Andreas and Johanna - www.cycle-the-world.de (Also in German)
Nino and I cycled with these guys for a morning in Hungary. They are on a 3 year trip around the world
Mark and Camille - http://www.lacaravaneapedales.com/ (French)
We cycled together through the Uzbek desert - great company
Robbie Sage - www.globalguitarcycle.com
I was at Edinburgh University with Robbie and he's cycling the world, towing his guitar and composing music on the way round.
Adventure Charity Cycle - https://www.facebook.com/adventurecharitycycle
Group cycling UK routes, raising money for charity
Alistair Humphreys - http://www.alastairhumphreys.com/
National Geographic Adventurer of the Year and an inspiration for my tour, no introduction needed.
Mark Beaumont - http://markbeaumontonline.com/
Round the world cycling record breaker (and much more) who provided me some great advice and endorsed my book