See this video. https://m.youtube.com/watch?v=BmNyNivlEVo
Two YouTubers disliked piers Corbyn political agenda, so they contacted him to express their bad faith interest in donating financially to the cause. They arranged a meeting which they secretly filmed and then heavily edited and published in which they told him that they were investors in Astrazeneca who felt guilty about their profits from the vaccines and showed and presented him with £10K of real cash under the premise that they were giving it to him. Legally it seems like they had lawfully and irrevocably transferred ownership of that money to Corbyn. They then surreptitiously took it back while he wasn't looking and swapped it with monopoly money.
Firstly it seems as though this is criminal theft as well as civilly speaking unlawful conversion or trover if not worse.
Secondly the covert filming of the encounter seemingly between public grounds and on the property of a private business without Corbyns knowledge or consent would raise serious legal questions.
Finally, their publishing of the heavily edited footage with the explicitly avowed goal of damaging his reputation would raise issues of defamation.
What are the criminal and civil implications of this antic?