Travelling in Britain with Droid Global - Will it cost an arm and a leg?

[Smokeyham]

I travel to Britain, and currently have an old, simple, Orange mobile phone with a "pay as you go" plan, which I use in Britain.

I'm tempted to get the new Droid Global, but if I use this in Britain will it cost me an arm and a leg to make simple phone calls? My carrier in the US is Verizon.

Part B of my quesstion.... I have a SIM card for my British Mobile phone. When I get to Britain could I just insert the British SIM card, and then use my current British number, and my pay-as-you-go program?

Thanks for your thoughts.....