@JR51 wrote:
The VPN does not affect Apple TV.
Note that other companies can choose to treat VPN use differently if they wish. Apple is a global streaming provider, while Sky is not: since Brexit a UK Sky subscription doesn't even extend to continental Europe for temporary travel and tourism use.
With the global streamers (Apple, Netflix, Amazon) you may find the catalogue of content is different when using VPN because they will try to only display content for which they have non-geographical rights.