If you're into digging up relatives, and they happen to be in one of London's larger cemeteries, take a look at web pages the BBC have for the magnificent Seven Victorian Cemeteries. Kensal Green, opened in 1832, was followed by West Norwood (1837), Highgate (1839), Nunhead (1840), Brompton (1840), Abney Park (1840) and Tower Hamlets (1841). You won't find much of direct help to the genealogist looking for ancestors who may be buried there, but there is a brief description for each mentioning some of the prominent people who found their final resting place. Some of the cemeteries are being rejuvenated for nature preservation, education and appropriate recreation. Start at the web page here.