Thanks fellas. Any how's the CAA issued me with a Class 1 but with an OML restriction (with or as co-pilot) so no massive practical issue. However, the (very supportive) AME is with me in disagreeing with the CAA that that restriction should be there anyway.
For anyone in the same boat, that wants to join me in lobbying the CAA please feel free to PM me. For anyone else that is interested, around 30% of the UK population and therefore probably the pilot community is living with an allergy to something. This could never show any response, could be an irritation, or become 'an incapacitating incident' at any time. Until I had my 'reaction' I had been eating shellfish at least weekly with no issue; however once I had some bloods done it was pretty clear that it was they that caused the problem! Therefore unless everyone has bloods tested for IgE response for everything and is 'clean' then 1/3 of us have the potential for a problem. Mine and the AME's argument is that I now know what to avoid and there is not a snow balls chance in hell that I will going near them again, let alone before flying. I know what might contain traces (not anywhere close to the infamous nut allergy issue) and carry the right gear to sort myself out in the remotest chance that someone feeds me a lobster skinny latte in the cruise...