Does anyone know if you can get SIM cards for a British phone to save money when you are travelling abroad? I’ve heard you can?

Hiya, I'm heading off for France next week and after spending a fortune on my mobile every time I go away, I've bought this SIM card from go-sim.com which gives me free incoming calls, and when I make outgoing calls, it only charges me at the local rate. They do single destination ones for loads of countries but they also do a global SIM if you want to go to more than one place. Hope that helps!