working in a warehouse with diabetes

i have type 1 diabetes which i have had since the age of 7. i have recently changed to lanctus long acting insulin and novorapid 3 times a day. shortly after the change i started getting hypos in the morning time, and now have reduced my lactus and now have good control, although in dec 17 2008 i had a hypo in work through a fault of my own rushing to get finished and not eatin enough. I drive a flt in a warehouse and also a shunter where i pull loaded and unloaded hgv trailers around a yard and into a loading bay. after seeing an occupational health advisor , they have now sent a report to my employer stating i should not drive a flt until i am clear of hyppos for 6 months but am able to drive the shunt motor with trailer which can pull a maximum weight of 44 ton where the flt can lift a max of 1.5ton. is there any way i can appeal this decision, either through legal channels or any other way