It’s all in the 60 page document that’s online
Well it’s advice, it’s Not a law to wear them, you will not be fined for not doing so. The government now advises that people should wear a face covering when in enclosed spaces and can’t socially distance
It’s also any face covering. A face covering is not a mask. The supplies of surgical masks need to be kept for those who need them it clearly states.
It also says a home made Cloth face covering can help reduce the risk of transmission is SOME circumstances
Not for children under 2 or those who may find it difficult to manage them correctly ( I.e primary school children unassisted or those with respiratory conditions)
If you use one you need to wash your hands before and after putting in on and off
Not sure what’s changed really? Sounds to me like wear one if you want...and we’ve been able to do that all along