We have our trip planned and yes I understand it's moving around here and there but we don't mind. May 5 fly to London. May 9th early fly to Vienna. May 13th - train to Budapest. May 17th to London and 18th back home. We have an event in London the 8th so that's why London is there. We've been to London multiple times so we don't need tours in London itself.
Would like to know if there's a tour that leaves from the Heathrow airport to Cantebury or Windsor Castle? We will be staying near the airport and dont want to have to take a train into London. Do you recommend tours in Vienna or Budapest besides Rick Steve's walking tours? Thanks in advance for any help.
There are regular buses between Heathrow and Windsor, so the easiest is probably to just take the bus there.
In Vienna, we used Vienna Explorer for a tour of the Wachau Valley, with Melk Abbey. They offer several other tours, including walking tours of Vienna. This was nearly 5 years ago, but the current reviews on TripAdvisor are similar to our excellent experience.