LHR SPOTTING

Hi I havent been around here for a while, anyone remember me?
I used to live in South London but a year ago I moved to present
address. I havent been spotting for some time so can anyone tell me
wheres is the best place to spot at Heathrow these days, its been
at least 3 years since I went there. And what about LGW? I hear its
pretty impossible to find a good spotting place now