Opinions wanted re whether I am interpreting the rules appropriately
91 year old dad lives 260 miles away in a different tier 2 area.
He is not in a bubble with anyone where he lives and is completely alone (and completely, unbearably lonely). Mum is in a nursing home but he hasn't been permitted to visit. Nursing home is not one of those celebrated on their news for their creative solutions to visiting - no portacabin with a perspex floor to ceiling screen at this particular nursing home 
I booked accommodation some time ago (dad has only a 2 bed bungalow) in a holiday apartment in his town - for the period 27/12 - 29/12 inclusive) - which doesn't fit with the Governments newly announced 5 day Christmas 'relaxed rules'.
I am assuming that we (dh and I and our two teens) can travel (a rather long way ) and stay in this accommodation where Dad lives - also a tier two area.
Presumably we can bubble with him (at the time he won't be in any such arrangement with anyone else - although he has been in a bubble with my brother who lives 100 miles from him and vists monthly - but on 27 December he won't have been face to face with brother for >3 weeks, so a temporary stay on that bubble and a new bubble with us?)
Don't want to fall foul of any over zealous police on the long journey down (in a hypothetical scenario where we may be stopped)