I am doing an implied integral here over over all random VPN services and servers, as the person I am replying to said that "any" VPN would work. If you have found one that seems to consistently work for the BBC--and based on their efforts against Disney+, I bet NordVPN would work?--you are now a single data point: if you search for BBC blocked VPN on Google, however, you will see that it is an extremely common issue that the BBC blacklists VPNs from accessing their service.

(FWIW, I could accept an argument that I am not "weighting" my certainly-informal statement well on actual usage figures: if NordVPN and ExpressVPN are even the only two VPNs that work well against the BBC, maybe they are alone a considerable percentage of the market. I am pushing back on the idea that "any" VPN would work, and so I am looking more at the idea of choosing a random brand, equally weighted.)