I have a joint mortgage with natwest. I want to remove the other person from the mortgage but natwest declined my transfer of equity application. They also cannot offer me any other options. So I have managed to get another lender to agree to give me a new mortgage. My question is, will natwest still want me to pay the £2000 early payment charge if I switch? Just seems a little unfair considering I have do everything I can to try and stay with them first, but they can't offer me anything.

If its in the mortgage contract you signed, they can do it.