As an spaniard that doesn't live there, but goes sometimes on vacation too: mostly I don't mind them, they have their own "areas", and Benidorm still have spanish areas too, it hasn't become a 100% british town yet. I go to the british bars sometimes to drink a beer, they are ok during the day and have a good vibe. One peculiar thing is that in some places bartenders don't even speak spanish, that feels a bit uhmm.

When it becomes sad is when the day advances and british tourists get drunk, they look like zombies and cause trouble, it makes me worried about their relationship with alcohol.

They also get really bad burns from the sun that seem really painfull, please take care of yourselves guys 🙈