The Thames Circular Cruise, due to launch in April, sees a £250,000 revamp of vessel Eleanor Rose.
Operating seven times a day from Tower Pier, the 45-minute cruise with live commentary
New addition RIB BlueLightning is identical to existing the 315 horsepower BlueThunder and will begin this summer for a seven day a week operation, up to four times a day.
City Cruises is also increasing the running of it lunch and afternoon cruise from three days a week to five, while its Show Boat evening dining cruise is also going up from five to seven days a week. The company said the increases were being brought in to cater to demand and will begin in April