We had 3 hours spare to spend

We had 3 hours spare to spend in London after a trip to Harley Street. I used Viator for the first time and will certainly use again to quickly book a circular hop on hop off river boat trip. The booking service was easy, the price was very good, the staff were friendly and valued our custom and the on-board information was interesting, amusing and overall excellent. I have since learnt of the global trips they provide and will certainly use again. GREAT VALUE FOR MONEY SERVICE.