Combine london sightseeing with a white knuckle speedboat ride on a 50 minute thames river cruise board your modern rib rigid inflatable boat and soak up the unparalleled views of top city attractions including big ben the london eye and st pauls cathedral learn about the citys history from your entertaining guide and then feel your adrenaline rush as your skipper pulls back the throttle and you rocket along the thames river at speeds of up to 35 miles 56 km per hour small group exper