I went for an Xray yesterday. One of the questions the reception asked me was if I was CEV. So I said I was and she directed me to a part of the waiting room well away from everyone else where there was a solitary chair a good six metres away from the next nearest!
Then I got directed to another solitary seat at the far end of the department well away from anyone else having Xrays before changing (in a cubicle nowhere near anyone else) and going into the actual Xray room.
It was quite a long walk! But good to feel looked after!