From Cambridge train to King's Cross St. Pancras Underground Station then Tube to Covent Garden Underground Station. 54min £23. From Cambridge bus to London Embankment Stn. 1hrs 55min £9. From Cambridge train to Tottenham Hale Bus Station then line 76 bus to Soho, Aldwych Somerset House. 2hrs 00min £16. From Cambridge drive to Covent Garden. 1hrs 13min £15. From Cambridge rideshare to London. 1hrs 38min £6.