As the government publishes key witness statements at the centre of a collapsed case involving two men accused of spying for China, we hear reaction from the former head of Parliament's Intelligence and Security Committee, Dominic Grieve.

Also on the programme: former Downing Street Adviser Dominic Cummings claims that there was a serious breach of data with the highest security classification in 2020. The Cabinet Office has denied his claim.

And we visit the five-day festival of Japanese sumo wrestling that's taken over the Royal Albert Hall in London.