Originally Posted by
FF333
After the departure security check, turn left (duty free area), watch our for Burberry on your left. After Burberry's on your left there is an escalator going down. You go down two floors and there is a smoking area. I discovered this three weeks ago. (If I remember correctly, there is a small sign "smoking area" before the first escalator.
WHAT A RELIEF

!!!!
I can confirm this from a couple months ago. I arrived at a different terminal, cleared customs and went outside for a smoke. Took the Heathrow express to T4 to wait for my next flight and found the smoking area as described. Could have saved my time bothering with customs, but still had plenty of time to burn anyways.