Flew Manchester to Heathrow on Tuesday 3rd in CE, on boarding a passenger told the crew about a peanut allergy and made an announcement about not selling and asking passengers to refrain from eating peanuts.

Meal was served and the desert has peanuts on the top , I asked if this was sensible as they had given a peanut warning , i was told it wasn't a problem due to the passenger being down the back of the plane.

I am no expert in either allergies to peanuts , but would it be worth the risk in serving desert ?