London’s Tourism Direct GVA (TDGVA) in 2019 is estimated by taking London’s share of the latest ONS regional TDGVA publication (2013) and multiplying it with the latest TDGVA estimate (2017) for the UK. The resulting figure is then multiplied with a ratio of London spend data from VisitBritain’s International Passenger Surveys from 2019 and 2017. This approach assumes 1) that...