I'm helping a friend out regarding a couple of issues. BA have agreed EU261 for them missing their BGI flight due to cancelling their NCL connection the weekend of the IT meltdown in February. However they are refusing a claim as they also missed their NCL connection on their return. BA are claiming a weather delay into LHR caused them to miss the connection. Our evidence supplied proves there was no abnormal weather, no ATC restrictions were in force and FR24 history shows no slowing down of the flight and not even a full hold carried out-just an orbit but they are insisting on holding their position. I fear this may go to CEDR for my friend. BUT the worrying thing is the threat that BA are stating that if he does, then BA will withdraw any offer presently made despite having already admitted liabillity for the outbound flight.