Updated Friday evening to include Church of England latest advice issued at 17.15
This morning the Ministry of Housing, Communities & Local Government has issued:
This is a comprehensive document. The whole needs to be read carefully before allowing any opening for individual prayer, which is now permitted (date was changed by Government yesterday) from tomorrow, Saturday.
A PDF copy of the Government document, at the time of writing is available here.
A summary of section 4 is found in this Law & Religion UK post: Guidance on supervised individual prayer
Update The Church of England has now issued the following: