A popular river cruise has re-launched its special sailings from Kent to London for the summer. Uber Boat by Thames Clippers is resuming its services from Gravesend Town Pier and Pontoon to the capital this weekend, starting on Saturday (July 27). The departure point is in Gravesend and will see boats cross the River Thames to Tilbury, in Essex, before heading to North Greenwich Pier. From there, passengers can disembark anywhere up to the Waterloo Pier, near the London Eye. The returning boat, however, only stops at London Bridge City and North Greenwich before returning to Tilbury and Graves…