The pilot knew there was gong to be a club activity there that day so he flew over early to secure a parking spot. Checked with the two local operators the best place to park so as not to obstruct their operations and parked away from the terminal within the clearly marked marked boundary of the parking area. Came back to find it had been pushed over the boundary line into the dirt.

The later arrivals simply decided that they wanted that spot so pushed the aircraft backwards off the designated parking area. They had about four people, witnessed and photographed by local operators, busy manoeuvering aeroplanes around the apron with tow bars. Fair enough move your own but just pushing other people's aircraft off into the dirt to make room for themselves...well if people here think that's acceptable then I guess they were part of that arrogant cohort.

If you’ve got photos of them, find out who they are and ask them, it won’t be hard to find them. You may be unaware of the reason for moving the aircraft. You’re hardly going to get support for your situation on an Internet forum if nobody knows the context.

I know exactly who they were, they have been contacted and admitted it was because they wanted that space so they pushed mine out of their way. They couldn't exactly deny it due to witnesses and photos.

It would have taken two minutes to ring and ask me if it could be moved but they chose not to. If they thought it would be easier to get forgiveness than permission they were very wrong.

If they organise an activity that takes the number of aircraft arriving beyond the capacity of the apron, is that a justification?

So there's more to the story than being posted. If you have all the details and evidence you say you have, go to the police. But you are going to have to take all of the legislation with you and explain it to them, they're not much chop these days.