The first 15 minutes of the World at One are worth a listen. A useful summary of what the advice is, and why, from a BBC reporter, followed by yet another interview with the chief scientific adviser further explaining the UK’s approach and - diplomatically - suggesting that the SNP’s decision to ban gatherings of more than 500 might have more to do with a desire to make a grand gesture than to take the best decision in the interest of public health.
https://www.bbc.co.uk/sounds/play/m000g4g8