Originally Posted by
navylad
In addition you are entitled to a personal item, which could be a coat, to go under the seat in front unless you are in an exit or bulkhead row..
Nope, the allowance is two bags, one small laptop bag / handbag (to go under the seat in front) and a larger cabin bag (which is not guaranteed, if there is no space). BA does not restrict whether you can take a coat, hat, scarf or any other clothing in addition to your two bags. Of course you should store things sensibly which involves not taking up locker space with coats.