I’ve been resident in Spain ten years, with nary a problem until now.
Thanks to the B word, my UK driver’s license becomes invalid on 31/12 and I would assume it’s the same for France too. If you’re resident in EU you must have the corresponding license.
Currently I can change it for a Spanish one at the equivalent of DVLA, simple enough – fill out some forms and have a medical, but it has to be done in person and the system is completely choked. After 31/12 the change isn’t possible and you’d have to take the Spanish driving test (in my case, three if I want to keep all categories*).
I have an appt. on Tuesday, but thanks to la ley de Murphy, I’m self isolating at home pending a CV19 test on Monday. If I test -ve (and get the text message in time), I can go to the appointment. If not, I might be retaking my driving test… hands at ten-to-two
*My fault, none of this is a surprise as we knew about it a year ago.