1. By legal interpretation so far seen - yes - the company's 'agent' is acting on behalf of BA (could be a case of joint liability) BA should really print that detail on the ticket i.e they have a 'reasonably possible' defense and would seem an obvious simple solution...so yr flight is on Iberia and no food service will be made and drinks are chargeable etc. (or refer to BA.COM for in flight service detail)
2. ...as above not all tickets sold by BA callcentres or BA.COM and are being supplied through various other conduits
3. Not a defense...again does BA advise you on the ticket to check the website for such data - if yes covered - if no not covered
4. Agree 150% on what you say - make life easier for everybody
