If you're thinking of coming to London and want to visit Earl, have a look at this map of London's Underground system. London (Heathrow) Airport, is on the blue (Piccadilly) line in the SW corner....that little blue loop. If you're coming to London via Eurostar, you'll arrive on the black (Northern) line and brown (Bakerloo) line, at Waterloo, the station is just to the South of trhe river. Major mainline stations are all on the yellow (Circle) line somewhere. This inc;ludes Victoria, Paddington, Liverpool Street, Euston and King's Cross Stations. As to where Earl lives, see below this map...

Earl's nearest Underground station is LADBROKE GROVE. This is slightly NW of the centre on the purple (Metropolitan) line, which also serves most of the mainline stations. you could also take the Heathrow Express from the airport to Paddington (expensive at £10 but VERY quick), change platforms and go back three stops to Ladbroke Grove.

However, do let Earl know in advance by e-mailing him that you're thinking of coming. He'd hate to miss you!