2087OWHC,
If you've nothing in your medical records, no prescriptions whatsoever, then you could state hand on heart you don't get hayfever. However, whats to say that you're invited up to Cranwell and have itchy eyes,sneezes say in July next year....bit difficult to avoid. I got a Flying Scholarship and jumped thru the aircrew hoops with mild hayfever. Medics were very thorough, with some very specialist tests in London and Cranwell giving me the all clear. I fly commercially, use Fexofenadine and Beconase. Still get the odd day when pollen count is bad, but the pills sort it out. Good luck.
Jenson