Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: IB+ Gold, TK E+, Hyatt Globalist, Marriott LTP, IHG Diamond
Posts: 14,208
So the issue is on a MAD-LHR? Are you definitely booked on Iberia, and not a BA codeshare? Otherwise you really ought to be able to select seats if you have the appropriate elite status.
Not sure about special meals though.