That is good news Stilly. The more vaccines that get approved the better. The UK have ordered 60 million doses of the Novavax,which is awaiting approval in the UK. It will be manufactured in the UK.
The biggest problem with all the vaccines is the lack of manufacturing capacity. I am not aware of any country hoarding vaccines. The majority are using them as soon as they can. I seem to recall that the US was storing AstraZeneca vaccine,pending approval. I don't know if that is still the case.
Here in the UK the government have funded a vaccine manufacturing centre. The hope is that it will be ready to start making vaccines later this year. Once that is up and running they will be able to start shipping vaccines abroad.