“ These rights also only apply to public spaces. Therefore, anyone protesting on private property without the permission of the occupier are likely to be viewed as a trespasser.”
I would say this is a grey area as although The Stadium is privately owned by Swann it is open to the public access
“Aggravated trespass is a criminal offence, so you can be arrested for it. You must be doing two things to commit aggravated trespass:
1) Trespassing.
2a) Intentionally obstructing
2b) Intentionally disrupting
2c) Intentionally intimidating others from carrying out ‘lawful activities’.”
Once you’ve left the inside of the ground, your match day ‘contract’ which grants you access to the inside of the stadium ends.
At that point any non peaceful demonstration that breaches points 2a/b/c, the perpetrators would be deemed to be trespassers.