The only observation area at LHR
is the one at T4
terminal) for those who have already gone past security; there is a fee to enter that one. Otherwise, there are none. The one that used to be atop T2
is now closed until further notice (possibly due to 9/11).
Are you flying into/through LHR
(what airline), or are you just visiting?
I will praise thee; for I am fearfully and wonderfully made... (Psalm 139:14)