The Tottenham Hotspur FC owner's multi-million pound super yacht has been spotted turning around on the River Thames today.
London-born businessman Joe Lewis, 80, had the 321ft-long state-of-the-art ship built in Germany last year.
The ship, called Aviva, took three years to build and little is known about its interior because of a veil of secrecy surrounding construction.
Despite being the 46th longest yacht in the world, she can reach speeds of up to 20 knots (23mph), or 10 knots (12mph) while using electric motors only thanks to her hybrid drive system.
London-born businessman Joe Lewis's super yacht Aviva was pictured sailing along the River Thames earlier today
The 321ft-long multi-million pound yacht took three years to build and can reach speeds of up to 20 knots (23mph)
It even features a full-size tennis court on board and can accommodate up to