We did the Buckingham Palace Exclusive Guided Tour in January 2023. This was my second time doing this with the last time being around 2015 and it has changed a bit.
You now check in at the Queens Gallery, which is on the side of the palace and the same entrance as the museum.
The tour itself is about an hour and a half and you get to see a majority of the State Rooms. We did not get to see the Bow Room, which was disappointing, but they said it was currently closed.
Our tour guide, Mandy, was absolutely fantastic and much better than the guide we had a few years back. She was very engaging, funny, related to our group and truly made this working royal palace a welcoming place!
Following the tour we were offered a free guide (no more champagne) and a 20% discount in the shop, which we took full advantage of. I will say, having the shop in the museum made it a very crowded place so we spent more time in here than we had hoped, but the gifts and quality were great.
The price tag was about $100 USD and absolutely worth it!