Insurance with Spanish license

If there's a better forum for this question then feel free to redirect me.

I'm English born and bred but to be able to spend time in Spain I had to get residencia and swap my license for a Spanish one. I intend to buy a 6m-ish campervan in England and keep it at my house in Devon. I would like to tour for say 3-4 months a year in Europe. The issue I'm having is regarding insurance. One broker I approached said they could only place me with one company because I have residencia in Spain.. I pointed out I've owned the house devon since 99 and I'm a british citizen that just happens to spend time at my Spanish house.

1. To anyone's knowledge, should my status with a Spanish license be a problem for any insurers you may know of?
2. Should I just get insurance online, declaring my Spanish license
3. Is 3-4 months in Europe a "normal" requirement?

All help gratefully received

Bob