Hi Katie,
That's great news for Mark and others who are trying to get back to Spain.
For anyone who hasn't signed up to Gov.UK alerts, this one was issued today at 4.47pm. Interesting to see that it says this has been communicated to the airlines - I assume anyone planning to travel on this basis will print off a copy of the information for check-in!
Good luck to all 'almost' residents who were hoping to get back here on the basis of having their approved "resguardos". Hope you can get here soon without further issues.
Best wishes,
Kim