Hi,
You would need to check with the supplier to make sure that they are treating the supply correctly.
If they are charging VAT on the supply because they belong in the UK for the purposes of the supply then VAT would be charged and subject to the normal rules of input tax you would reclaim the VAT charged as your input tax.
If your supplier is not charging you VAT because they belong overseas for the purpose of the supply then they will not charge you VAT and you will account for the reverse charge on this supply. You can see guidance here:
Introduction to input tax
Reverse charge
Thank you.