Before the EU they didn't care.
After the EU they do care.
I rest my case.
If i were the Brit government, I'd take retaliatory actions.
1. Ban all Brits from entering Spain.
2. Remove all Spanish citizens forcibly from the UK.
3. Ban all Spanish ships from UK waters, sink them if they enter illegally.
4. Sever all diplomatic links with Spain.
IMHO the UK should be preparing for war with the EU.
Start accumulating weapons, recruiting soldiers.