Thames clippers: Public transport boats used by commuters, faster than cruise boats. Westminster to canary wharf £9.80 adult, runs every 20 mins peak hours.

Popular routes: Westminster pier to greenwich offers maritime museum and cutty sark access. Tower bridge to canary wharf connects financial districts via river.

Tourist boats: City cruises charge £15-25 for same route, slower speeds, guided commentary. Choose based on preference for efficiency versus information about london bridge history.