It is with a very heavy heart I must tell you we cannot continue with Christmas as planned. In England, those living in Tier 4 areas should not mix with anyone outside their own household at Christmas,”
Across the rest of the country, the Christmas rules allowing up to three households to meet will now be limited to Christmas Day only, rather than the five days as previously set out.
https://www.rt.com/uk/510208-london-england-new-christmas-restrictions/