Thamnks for the reply, which campsite did you go to and was it any good?
We went to two campsites, one in Portugal and one in Spain. The Portugese campsite was in a small village that had a baker/bar/pizzeria all rolled into one, superb pizzas

However, the campsite served food too and we had a superb meal, at a large table, with a load of Dutch campers.
The campsite is owned by a Dutch couple who speak very good English and the campsite has a bar and swimming pool, the pool was not open when we were there.
It is called Quinta das Cegonhas and the position is N40 31.204 W7 32.458, I'll attach the Garmin waypoint file too. The campsite owner was very knowledgeable about the area and gave us a map of the best roads. We had a great two days there and it was nice to ride the roads without all of the luggage.
http://www.cegonhas.com/ Some pics:
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From there we rode up to Porto for the day and stayed in a hotel, nice city and worth a visit if you are nearby.
The other campsite was in Potes, in the Picos, it's called Camping La Viorna. It's owned by a Spanish couple who seem to everything and they do it well. The site is spotless and very well looked after. There is a small shop that sells the usual necessities and a restaurant that served breakfast and evening meals. We didn't bother with breakfast but the evening meals were superb, they also serve a very nice Rioja too. They have a bar and swimming pool, the latter was being cleaned for the season.
Again, the site was great for riding around the Picos and we stayed two days, leaving our luggage behind once again. You can walk into Potes from there, it takes about 15 minutes and is worth seeing, especially the side streets. The cable car is a short ride from there too. For some reason I do not have the waypoint for this campsite but if you are in Potes you pass the tourist information/coach station on your right and as you head out of town you take a left turn at the statue, of a boy I think, that is on the junction to your left. The campsite is signposted from there anyway but it's about three quarters of a mile up there on your right. The road stops anyway when you reach a monastry at the top so you know if you miss it.
http://www.campinglaviorna.com/
Some pics:
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The view from my tent, superb.
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Nice restaurant on the road to the cable car, on the left as you go there.
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The monastry at the top, past the campsite.
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Another view from the campsite.
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Garmin waypoint file: