Nice thread, here I go...
So in no particular order;
Maltesers+Teasers
Twirl
Wispa
Milkyway
MilkyBar
Flake
Snickers
Crunchie
Twix
TimeOut
Aero (all of them especially the chocolate one)
Galaxy
Rolo
Freddo Dairy milk caramel
Cadbury dream
KitKat
Curlywurly
Bounty (sometimes)