If you can get one shipped, giffgaff. 10 goody bag, unlimited Iinternet, plus calls and sms. Uses o2 network which I believe the best..

http://giffgaff.com/

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Always read the OP's of a thread and the last 2 pages before asking questions, unless there has been an update - in which case, read the last 5 pages!

nexus 5 | SlimKat | ElementalX kernel | Philz Touch Recovery

I do NOT reply to support queries over PM.