Jean mentioned it to me Sal.
Can't help much except to give a lead on an English Insurance Agent here.
We have two Spanish registered cars insured here and we did get some NCB because we had previously been named drives on other Spanish policies. I didn't need to ask about transferring NCB from UK insurances so can't advise on that.
One thing I've noticed here is that almost all "brokers" are not really brokers at all. They tend to tied agents representing just one company and are thus not pricing the market for you, simply giving you a price for the single product they can provide.
Also fully comprehensive insurance seems to be unusual on vehicles more than a few years old. The categories we recognise as Comp and Third Party Fire and Theft are differently named and are not quite the same as they are in the UK. Also in Spain it's vehicles which are insured and not drivers so that in the absence of specific exclusions for young drivers or similar all policies are any driver.
There are plenty of English speaking online insurers in Spain and, even though my Spanish is adequate for most purposes, I find it best to try to do something as potentially complicated as car insurance in English just to be sure I avoid any slight misunderstandings.
For my car I've used Harriett Richardson for the last 7 or 8 years and found her competent. She's in Murcia province but that won't prevent her helping I think.
Centro Comercial Camposol A
Tel.669 046 167 / 868 199 121
Another one that comes up in every search: http://www.jennifercunningham.net/ca...nce_spain.html
Though both of the above are tied to Liberty Seguros I believe. So no point in contacting both.
There's an explanation of categories of insurance in Spain on this page: https://www.justlanded.com/english/S.../Car-insurance
There are online insurers advertising for Autocaravana Seguros but I've no idea whether many of them will speak English, which I'd prefer.
Good luck with the search.