No nuts please!
Doing a TP run LHR-EDI on BA1444 (departing imminently!) and the CC have just announced that, due to a passenger with a nut allergy, no nuts will be served on board and could all passengers refrain from eating any nut products.
First time I've heard this announcement but I'm sure it's quite common. The allergy must be quite severe for the recycled air to cause a risk with the particles floating about.