Jonnie has been leading fun, informal, factoid packed walks around London for over 15 years. Jonnie is the founder of Bowl of Chalk names by Time Out as one of London's best walking tours for five consecutive years. Bowl of Chalk is recognised among the top 0.5% of London tour companies supported by over 1,250 five-star reviews. Jonnie's work and expertise have been featured by Radio 4, The Independent, The Guardian, The Times, and other media outlets.