In the Spectator magazine’s Health column, the political journalist Isabel Hardman, in a piece entitled ‘Nature Boost: How time outside can lift your mood’, recommends going on a tree walk. ‘London Tree Walks by Paul Wood takes you on a series of wonderful adventures through the capital,’ she writes, ‘Wood has written a great deal about the forest of trees that grow on our streets, and this book points out quite how many different ones you can see even on relatively short trips.’