Here's a good site, with some links to old LHR photos and charts (and indeed, many other UK and foreign airports and air bases):
https://atchistory.wordpress.com/202.../heathrow-atc/
https://atchistory.wordpress.com/202...ow-atc-part-2/
Here's some more old charts - not all LHR, but a good few, further down:
https://atchistory.wordpress.com/202...proach-charts/
I've been a visitor to LHR since the early 1990s and for all its faults (and a far, far better today than it was then), I've always loved the place. Was born in late 1960s, so missed the "golden" jet age.
My first flight as a pax through LHR was in March 1981, 40 years ago last week, flying to KWI on a KAC 747.