I will be in London for one day in September with a friend and would like a private custom tour. Could anyone suggest a good guide?
“The London Spy” (David Harry) is excellent and very entertaining. His specialism is the City of London (the financial district) but he can offer custom-made walking tours of any part you’re interested in. Highly recommended (as well as being incredibly well-informed on history, he can also do magic tricks). https://thelondonspy.com/
He also has a TikTok account full of really interesting videos.
https://www.tiktok.com/@the_london_spy?_t=8cTH1JbicPb&_r=1