I was just planning our visit to Ireland and England, booking hotels, flights, tours, etc. One hotel was available in the morning, but I had more research to do and tried booking 3 hours later, nothing was available, in fact nothing for the entire month of July.
I called the hotel, via my Hilton Honors contact and the hotel reservation clerk for the Doubletree by Hilton Victoria said that "something is big happening in London next summer." They couldn't accommodate me, said rates would likely be higher if they did open up.
So I booked with a nearby Premier Inn.
What is going on in London next July?