The UK regulator Brexit has created is more willing to take Big Pharma's data at face value which is why UK has ended up clearing more vaccines more quickly. I think it has also made EU more dot every I cross every t with regards the Oxford vaccine than it would have been had it been developed by reserach scientists at one of the EU's most prestigious University's.
Pooled approach is 20-33 % cheaper per dose, but paying for priority makes more sense given the economic fallout from every other aspect of the pandemic. Pooled approach is fraying at the edges as a result. Not particularly into glorifying queue barging, fortunately the vaccine thing adds another story. UK approach is leading to 300million Indians predicted to be vaccinated by mid July and is already arriving in Bhutan,, Maldives... The whloe Brexit/ Covd thing looks to have got the UK back into pharma manufacter as well. World Service was saying last summer we only really had r&d production capacity, capable of 2litres of the stuff. Read in an article on the fire at the New Delhi plant that all the UK is being made here so must be new capacity.