Thanks everyone for your advice, we have staying in the carpark next to Platja La Mora just north of Tarragona. We are then booked in at camping Barcelona for two nights at €20 a night with my ACSI membership. We did consider the other site recommended by a few, but didn't like the idea of been on a flight path for Barcelona airport.
I have a confession to make, I did a school boy error, set the coordinates into me sat nav, but didn't change the longitude from West to East, after doing over 200 Kms and in the middle of nowhere my wife decided to chip in that we are going further away from our destination, she was watching the map, whilst I was driving, we were nearer to Zaragoza than Tarragona.
I pulled up and checked and then realised my error, but my new coordinate's in and it said I had 235km to drive to reach my destination, good job I had filled my fuel tank up, we were up in the mountains at the back of beyond. Got the wife to fire up some bacon, sausages and egg and then set off again, think I have been driving 6 hours today, the scenery was stunning though, but with the mileage and time spent driving we could have easily have been in Barcelona. Lol