Well Christmas itself cannot be cancelled, but there will be a few spanners in the works.
Santa is almost certainly a type 2 diabetic and will be shielding. So there go the presents.
Churches will have to live stream their services without a congregation, so no singing.
The Queen probably wont bother with an address because nobody will want to watch her sat in front of a gold piano when they've all lost their jobs.
The work Christmas do will be cancelled to prevent mass gatherings.
Mistletoe will be discouraged because theres no better way to spread covid than kissing strangers.
There is no way most people will be able to get a delivery slot for christmas. Can you even imagine. So cheesy pasta all round on that front.
On the bright side, there will be plenty of old loo rolls for Christmas crafts, and elderly relatives will still be shielding at home so no pick ups or having to talk about the war.
So we will have a Christmas, it will just be a bit different to our normal one.