skua, a bit further away from London there's this:
http://www.nvr.org.uk/stations/guide.pdf
Apparently a V1 landed close to Castor station. The crater is supposed to be still visible but I couldn't see it when I went past the site the other day - probably looking in the wrong place.
On second thought -- it's ahelluva long way from London , did they have the range or is it a local myth to attract custom?