The latest information is that all residents (including children of all ages) of the UK travelling to Spain must have completed a Health Control Form (FCS).
This form can be downloaded on https://www.spth.gob.es
You do not need a PCR or antigen test for Covid-19 to enter Spain unless you have travelled to another country the 14 days before you travel to Spain.
If you have not booked a hotel or other tourist accommodation but are staying with family and friends you may be asked for a “Carta de Invitación.” (see previous article on travelling after May 24). At the very least you should have a letter or email from your host inviting you to stay and giving their name and address.
