Timothy Spall does indeed seem to live in Forest Hill/Honor Oak, as I have seen him walking a small dog by the allotments just west of Honor Oak Station...but I had no idea that there are so many other famous (and not so famous) faces around these parts until I came across a discussion on Forest Hill celebrities on se23.com.
Have also discovered from the forum that Lewisham is twinned with a place in Nicaragua called Matagalpa, which apparently means "lets go where the rocks are". Shouldn't that be "let's go where the rock is"? (Which amazingly does not seem to be a rock anthem by AC/DC, Aerosmith, KISS or anyone else as I can't find a single page when searching on the term with Google. Can that be right?)