Though rarely do they have U.K. offerings, Intrepid Travel is well worth checking out. it is one of only two only major tour outfits I know (along with G Adventures) of that makes a concerted effort to travel like real independent travelers—small groups (max of 12 people), staying in mom-and-pop accommodations and getting around by public transport rather than a big tour bus.

This fantastic Australian company marries an independent travel style with the expertise of truly knowledgeable guides and a focus on the cultural experience of travel.

Intrepid really does run a different breed of group tour. Let me put it this way: When my parents—who travel widely and on their own and normally would never have even considered taking a group tour—suddenly found themselves with airfare to Japan but no time to plan a trip, I suggested they try booking with Intrepid. They did—and they have raved about it every since. Nearly seven years later, they were still in touch with their guide via email.