Hi - thanks for your answer. You said "All things being equal you are in doubt the owner of what you created." Did you mean "...you are no doubt the owner..."?
As things stand, the rink staff have have been helpful to me and my employees. This positively reinforced the idea that we were not only allowed to film but encouraged to do so. Whenever a team has asked us to record a game, the rink staff have been helpful. But this makes no difference if they now say "stop filming"? I had no advance notice of any restriction, and as I mentioned, I sent them a detailed proposal covering when I would be filming and who, some 2 months ago.
In summary would it be fair to say that they are entitled to ask me to stop now, but not necessarily entitled to the footage I have shot to date?