I checked the donations to the fund providing access to vaccines for 92 low and middle income countries. The UK donation still stands out as special, it is around a third of the total raised.
On top of that the UK vaccine will be provided at cost for the duration of the pandemic. That is probably somewhere around £5 per person. The US vaccine costs around £30 per person.
There are a lot of things wrong with the UK, but sometimes it is worth recognising that we might just be showing the world how to do things right in important areas.