From the SYAM website

Once again, the Great British weather has spoiled a good weekend. Checking the Museum website just now, I found the following:

Sadly, due to a waterlogged field, it will not be possible to host the outdoor part of this weekends Falklands Event, the area being unsuitable for parking large aircraft in its current state. The museum’s Falklands collection will still be on show in the hangar alongside the other exhibits advertised throughout the weekend. We apologise for any dissapointment caused however the current poor weather is unfortunately beyond our control. 🙁