El Pais English Edition editor Simon Hunter seeks to clarify some of the rumors and misinformation that have been circulating about travel between the UK and Spanish shores in recent weeks, compiling the latest advice from the British Embassy and campaigning groups

Lots of information here:

https://english.elpais.com/trans_iberian/2021-05-28/from-ryanair-boarding-passes-to-tie-residency-cards-the-latest-brexit-updates-for-brits-in-spain.html?fbclid=IwAR0OJkPSCQWiWFo9kIh_IVh_2OeULqkWEkU5zwxckETKi_hiMnAt08yU_hI