Yes I do drive a Spanish plated car but my licence is still a UK one and I have not been able to change it for various reasons until now. I have booked the medical and the DGT appointment for this month to renew it for a Spanish one rather than just exchange it, first appointment for this option was July when I booked that one.
I mentioned medical insurance as I read on here that with a no deal Brexit there might be a situation where even pensioners would need to pay some sort of contribution to the state system in Spain, over 65's @ €157 per month.