Thanks for the suggestions so far. In facy I called Saga and they told me that they would give me a full NCD as long as my last policy in Spain was no more than two years old, which is good because the two years are not up until June.
Nearest Swintons is Eastbourne, I'll give them and Ady...
When I left Spain two years ago I had a full no claims bonus with a Spanish insurance company.
For the last two years I have been back in UK and I haven't owned or driven a car (other than a few hires) but I now need to buy one. Online sites like Go Compare ask for no claims entitlement but...