Yes, and only/primarily/first at-risk groups, incl. at risk to themselves or others because of workplace in healthcare/residential home/etc. - but nothing firm I don't think.

https://www.gov.uk/government/publications/priority-groups-f...

We're still months away from all 20M (of a >60M population) people that vaccines have been ordered for being administered with them, (BBC reports 'up to' 10M doses 'may' be 'delivered' this year, i.e. 5M people max) so I suppose they still have plenty of time to decide the most effective pecking order.

I would assume the trials in kids will start soon. Though today I haven't heard of them so far. (kids are hard to test because each age reacts differently)