The senior aide's account of his trip during lockdown was "exhaustive and verifiable", minister says.
A top scientist criticises the staging of the Cheltenham Festival and Liverpool's Champions League tie.
Boris Johnson says all shops can reopen in England next month if they meet certain Covid-19 guidelines.
No staff member will accompany members of the public on test drives as part of social distancing measures.
Jaden Moodie was 14 when he was knocked off his moped and stabbed to death in east London.