No, they just need a copy of the no claims bonus, I just faxed it to them bu them had to fill in a form saying who my car had been insured with for the last 5 years..but was told just to write that I would not remember the name of the company!!!
Linea directa were about 200€ more than the quotes I got from ARPEM, gave me loads of quotes without a problem. The problem was only when I started to get the individual quotes from the best insurer…the only advantage i know of LD is you can talk to them in English as you find the online quotes won’t like the fact your old insurance is from outside of Spain and you will end up ringing them anyway! But I managed it with no probs in Spanish, its not that hard!!!