From High Wycombe train to Marylebone Station, line 18 bus to Edgware Road (Circle Line) Underground Station, then Tube to Earl's Court Underground Station. 40 min £20. From High Wycombe, High Street (Corporation Street) bus to Uxbridge Underground Station then Tube to Earl's Court Underground Station. 1 h 31 min £9. From High Wycombe taxi to Earls Court. 37 min £125. From High Wycombe drive to Earls Court. 37 min £5.