Far from it Logan.
They will more than likely do a function test using a flight instructor examiner which will basically check you can use the brakes and rudder like anyone else and if you are good that will be it. Maybe not even that.
Best thing is to just book yourself a class one at Gatwick and go through it. They have the final say and once you get past them that's it sorted. Phoning people up with this sort of thing never really answers the question until your sat at the doctors desk in Gatwick and they can get their hands on you, you will never know. Don't be scared of them in Gatwick they are quite down to earth with this sort of thing and if they can they will get you flying.
BTW just because you have class one doesn't mean you have to have a medical every year the cert includes class 2 rights which is all you need to do training and go solo etc. So you can let the class 1 bit lapse and only get it current again when you are ready for the final hurdle of CPL.