UPDATE 4 September: Channel 4’s undercover investigation has escalated into a serious crisis for Reform UK. Nigel Farage’s longtime aide Dan Jukes and head of policy James Orr have been told to step down, Lee Anderson says there is no chance of their return, and the Electoral Commission is in touch with the Met. Reform denies wrongdoing and Farage says no illegal transaction occurred. Below, we set out the latest developments before preserving our original.