Google wallet in the UK

Hi everyone,

Had my nexus 4 for a while now, and this isn't my first nfc enabled smartphone. I am really keen to try the nfc payments thing as quite a few shops on the UK now offer it, does anyone know when Google wallet is due here? Are there any good alternatives, was thinking of just getting a contactless debit card instead? Have you had any experience with contactless payment and is it any good? Thanks for reading :-D