Lower Thames and Medway Passenger Boat Company was a river boat company which provided cruises on the River Thames in Gravesend and London, UK.

Princess Pocahontas cruises begin at Gravesend and head west past Tilbury Docks, under the Queen Elizabeth II Bridge at Dartford and through the Thames Barrier, calling at Greenwich Pier.

Passengers may remain on board for an optional "stay-aboard" cruise along the Thames, which returns to Greenwich.

The company owns a 110-foot (34 m)-long, double-decker leisure boat, MV Princess Pocahontas with seating for 134 passengers.

They also own the passenger boat Duchess M which used to operate the ferry service between Gravesend and Tilbury.