Originally Posted by
gfunkdave
What exactly is your concern? Just about every email provider, bank website, Facebook, and most other sites will use TLS these days. Nobody will be able to eavesdrop. They'll know what site you're visiting, but that's it. And if you get a VPN provider, the VPN provider will know what site you're visiting. The only need for a VPN is to spoof your location or if your local ISP censors your access to the web - neither of which is likely to be a concern in the UK.
Enjoy your trip.
yes, OP please elaborate your specific concerns a little bit more. Most things that most of us do most days are pretty safe from network-based eavesdropping nowadays. Apps hide this a bit, so if you want to be extra safe you can stick with web browsers and make sure the TLS security is marked.