Credit car protection on faulty imported goods

I purchased some LED aquarium lights from China on the recommendation of some people I know. The lights are faulty. I purchased with Paypal, but using my Nationwide credit card as the funding source. The cost was $600 US, so above the £100 required for protection in this country.

Paypal won't play as it is now more than 45 days since payment date. My next thought is to approach Nationwide because the seller isn't playing ball with me. I keep a £0 balance on my Paypal account, so every transaction is funded by my credit card and I have had success in the past disputing transactions made in the UK. I am lead to believe that this cover should protect me no matter where I purchase. Would that be correct?

Thanks

Mark