I applied for a UK Visitor Visa and got my visa. I was going to participate in a two day training course at Cambridge University. But due to some issues with the course, I would not like to participate in the course this time.
As I purchased my two way flight ticket already, is it possible to use my ticket for tourist purposes (sightseeing in London) only instead of participating in the course?
During the Landing interview, should I mention this issue? Should I provide the new hotel reservation and is it enough?