The Lions achieved their first series victory in 16 years with a 41-16>triumph over the Wallabies in the third Test in Sydney last Saturday.
"It is a great feeling," RugbyRugby.com quotes Warburton as saying. "This Lions tour has been a long time coming so it is nice to come back with a trophy.
"It has only been done nine times in 125 years so all the players know they are part of a very prestigious group and are very proud of that. It won't sink in for a long time, I think. It feels quite surreal being part of a Lions touring party."
A hoard of fans greeted Warburton and his teammates when they touched down at Heathrow Airport today.