I took this tour in 2005 and Kim was the guide (Hillary was on holiday in Egypt). I love London history and wandering around the City of London (Square Mile) so this walk was literally up my alley. My favorite church was the last one we visited St. Stephen Walbrook. We ended the tour I recall right near one of my favorite ancient streets in the City called Bow Lane right as it was getting dark - wonderfully atmospheric. Although it helps to have some advanced knowledge of London history, anyone who likes exploring medieval nooks and crannies should enjoy this walk.

There were two themes throughout this walk -- stenches, and Wren churches.

The emphasis was on the 1660's and the Great Fire, though with plenty of information about other times, incuding Roman, medieval, and WW II. The guide must have mentioned in three or four different contexts how much people and the city in general stank in those days (WW II excepted).

We saw the interiors of two Wren churches, and the exteriors of -- Five? Six? I lost count.

The walk was pitched at those without a very advanced knowledge of London history. The guide explained about the City, the square mile, Samuel Pepys, etc. Even so, she did add a number of details and anecdotes that I had never heard before.

P.S. When I went, the guide was Kim, rather than Hilary.