From Heathrow Terminals 1-3 train to Lancaster Gate Underground Station, Tube to London Liverpool Street, then train to Colchester. 1hrs 40min £42. From Heathrow Central Bus Station line 250 bus to Colchester Town Centre, Stanwell Street (Colch Bus Stn). 2hrs 35min £59. From London Heathrow Airport (LHR) drive to Colchester. 1hrs 35min £20.