I bought a dongle off ebay for under a tenner, however I mostly use my mobile phone to access mobile broadband by tethering it with my laptop, if you have a smartphone that has a built in modem then you can do this and you wont need to get a dongle. I would strongly recommend GiffGaff as their prices are the best value.
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DON'T LET THE B**STARDS GRIND YOU DOWN ! ! ! | 
