Theatres, music venues and indoor performance spaces will be allowed to welcome back live audiences from next month, the government has confirmed.Boris Johnson announced the news today as the UK reaches the fourth step in the government's five-stage roadmap.Audiences will be permitted to return from August 1, but must adhere to social distancing measures.Performers will also have to maintain social distancing at all times.The announcement is a major step forward for the arts industry, one of the