Private tours
Your own guide, your own pace, priced per group rather than per person on most listings.
Prices run from £30 to £499, and half of the 38 priced listings cost £222 or less. Most take 2 hours to 4 hours. The best reviewed with at least 100 reviews is London: Sightseeing Black Cab Tour with Hotel Pickup (5.0 from 319 reviews).
For the operators we researched and recommend, see our food tours and cooking classes in London, or the experiences overview.