Hi Alison,
My GP was originally reluctant to make a referral, so I went through the process of seeing my original consultant for a chat, which was what my GP wanted. After that, I didn't feel particularly reassured, so I went back to the GP (saw a different one in the practice) and he was more than happy to refer me to my nearest expert.
So, it may be worth either seeing a different GP in the practice if you come up against reluctance, or perhaps contacting PALS, who can help you with understanding what your rights are so that you can counter any objections from your GP.
You may be surprised, the GP may well be sympathetic to your need to see an expert, given your history.
It is your right to see who you want to see.
Best of luck,
Nicki