I caught the tube down to Richmond with the idea to follow the Thamespath down the Thames, through Kingston and then to see where I ended up. I walked past Ham House on my way - I never even knew it was there! This is a National Trust place, so I took a look around the gardens before heading off.
I kept walking until I hit Hampton Court Palace, when it started getting dark, so caught the train back home again. It was such a nice walk!