Uber Boat by Thames Clippers: Tower of London, Canary Wharf, Greenwich and 21 other ports. City Cruises: London Eye, Tower of London, Greenwich and Westminster. Thames River Sightseeing: Westminster, Tower Bridge and Greenwich. Woolwich Ferry: Woolwich (London) and North Woolwich. Thames River Boats: Richmond (London), Kingston upon Thames, Hampton Court, Westminster, Chiswick (London) and Kew. Waverley Excursions: from Southend.