man friday - although you booked the tickets a month ago, please can you advise what the date of travel would have been? I think, regardless of whether a small claims court or watchdog consider the "finer points of the law", the decision would rest on whether or not the period of notice given to you was "fair and reasonable".
It is quite likely that the re-routing has come about through the decision by Willie Walsh to ground 16 aeroplanes for the period of the economic downturn. The inconvenience to customers is regrettable, but is it not fair and reasonable for a company to take necessary steps to control its costs?
Did you consider the feasibility of flying AGP-LGW LGW-MCO (Malaga is very often used as a diversionary airport for Gibraltar when the Rock is obscured by fog, mizzle or dangerous crosswinds make the ability to land at one of the world's most spectacular runways very precarious!)
Sorry - not trying to wind you up or anything - just trying to be helpful!
Bea