The follow up to all this was  to those who are interested, I parked at Reus Airport for two months and returned from UK to find the Jeep was still where I parked it. I left it with a solar trickle charger on the battery and the jump leads I brought with me were not needed, it started first pull! There is a rumour that we will be paying to park when the carpark is completed which I tend to think will happen, someone will have to pay for all that work.
After spending three weeks in Tortosa I thought I would try a different way back to UK.So left the car at my shack and took the 9.18am train from Tortosa(there is a 10.45) to Barcelona Sants and a connection into the Airport, arrived at airport 11.55am, all for 11euros.Well worth thinking about if you are not an early riser! As I don't live too far from Gatwick it was not too bad a trip and I am more willing to pay Easyjet,BA or whoever a bit more than subscribe to Mr O'Learys cattletrucks if I can avoid it, he will charge us by our bodyweight shortly, and unfortunately, I'm not thin!!