Some of BA’s research and focus groups are done though http://www.focus4people.com,. All anonymous until you are selected by the client as suitable.
Back to the topic, I do wonder what it takes for BA to listen. When the winter 2012/13 timetable started there was quite a lot of negative feedback on the Club Europe catering with the brunch and extended hours for afternoon tea. Despite lots of apparent negative feedback with Avios thrown left right and centre at people that complained it would seem that nothing major has been done with regards to these changes simply minor tweeks.