Nearest allergist for us is 100km away, I would love to see one, going to ask next time because he has other issues too. He was level 6 on the rast test so I knew he was very allergic. He is level 1 for wheat but eats it with no problems. He is severly allergic to cats, pollen, dust mites, horses, shrubbery and has asthma and excema although both are controlled.
His little brother has severe asthma and is on steroids evrey few weeks and has had numerous hospital admissions for asthma and pneumonia,(lost count!) now I would love to get his asthma under control.
I am not sure about the label and what it means. I would not let him eat may contains anyway though so it does not matter either way. I think labelling laws are different in the UK but they are changing for the better.

Can you get a referral to an allergist from your Ped? Or from another mom you know with asthmatic kids?
Sounds like your 2nd DS may have allergies also. Some Peds are great at handling this, but the Allergist is often best and most up-to-date.
Just make the appt for a Friday, and call it family weekend. Find a nice, cozy inn nearby.
Good luck,
Daisy