Join John as he walks 155 miles along the Thames River from its headwaters near the Cotswolds down to London town. WW II relics, wildlife, nature, history, people along the way and local customs are all in the package. See what a "full English breakfast" looks like. Learn the best time to do this hike and how easy it is to plan and execute. John stayed overnight in hotels and B&Bs, but the walk could be done camping along the way or even by kayak.