No. That is, unless the dietician themself has a gluten disorder or is managing a close family member who does and therefore is immersed in it daily so as to be up on the nuances of eating gluten free. Otherwise, they just give you very general information which you can get online.  

Yes, a very cryptic and uninformative lab result report indeed! But it does seem like this is typical for the UK. It's almost like the "professionals" in that healthcare system don't want you to try and figure anything out for yourself.

Thanks for the explanation. Do you think a dietician is required? I see people ask about getting one but what now will they help with besides charge you to say start away from gluten.

Wow! I think the answers to your questions seem obvious to me but I'll oblige you. It's invasive because they are running a scope into an orifice and down through much of your body. Any procedure that invades the body is invasive. It's expensive because you are paying a trained professional (a doctor) to do it, plus nurses and an anesthesiologist plus you are using expensive equipment. It may not be expensive to you, depending on your insurance plan, but it is expensive as far as the health insurer is concerned. It involves some risk because you would be put under anesthesia and because there is always the danger of tearing something with the scope on the way down through your esophagus, stomach and into your small bowel.    

Maybe your followup is for the elevated total IgA, and not for celiac. It is strange not to have a numerical result for the tissue transglutaminase. I hope you get answers in the followup with your GP.