Hi, I assume you have insurance for the UK? If so then you are set, but try to get a green card valid for Turkey (and any Balkan countries you plan on going through). Don't worry if you can't get it, you just buy insurance at the border.
No carnet needed for your trip, but forget about going through Africa. Poke around the forums here to find out why. Look for Maroc/Algeria border, Lybia guides and visas and Egypt.
Enjoy your trip.
Salut from Southern France, the bikers' paradise,