Whether the kettle's earthed depends on the kettle (some have plastic bodies, some metal). All sockets are three-pin in the UK, so it doesn't make a difference either way: I'm pretty sure the earth pin on the plug is connected through to the other end of the cable, but there's obviously no requirement that the appliance should use it.
(We call it "earth" in the UK; "grounding" is just for rebellious teenagers. :) )
(no subject)
(We call it "earth" in the UK; "grounding" is just for rebellious teenagers. :) )