Urgent Travel info needed

My son is not vaccinated ( adult) and is flying back to UK on Wednesday and flying back to
Spain on Friday.
I am having trouble finding the correct information for him to get back to Spain . He has residencia.
He will get PCR before Wednesday and has ordered his day 2 and 8 test for UK.

Has anyone unvaccinated traveled back to UK and back to Spain recently. What are the rules.?
I have looked on Spanish website and I think it says an antigen test is required within 48 hours for entry to Spain ( for residents) but also says a PCR test is needed so I am totally confused.
The problem is the short trip also
Any help would be greatly appreciated.

I had better correct this post as it appears travellers who are UK residents and who are unvaccinated need to take a PCR test 72hrs before travel to Spain.


However unvaccinated Spanish and EU travellers and their families, as well as British residents in Spain can enter Spain with a negative antigen test carried out within 48 hours before travel.


Bee

Thanks. He has booked an antigen test to come back to Spain as he is resident.