fast and cheap way to get from lhr to downtown london
I have a long layover (about 8.5 hours) in lhr what do you recommend i do. I dont want to spend a fortune going in to town but i dont want to sit in a lounge for 8 hours.
also is there a place to leave lugage. I am coming in on ba from jfk so i think i will be in terminal 4.
thanks for all your help.