Decided to try the Proton VPN only to find out that I could not install it on either the Panasonic or Samsung TVs. However I then found out that if that is the case then installing the VPN on the router was the next best option. Sadly the Plusnet router does not support VPN which means a new router.
Although at present most of our devices are only Wifi 6, I think the way forward is a Wifi 7 OPenVPN router with Ethernet speed at least 2.5GB. Probably will not be cheap, but we have burnt our fingers once too often with budget buys. The
TP-Link Archer BE550 seems to fit the bill. Asus do come highly recommended, but after sales or support is diabolical!