T Mobile 610 USB mobile internet dongle.
Has been used with my laptop for the last few months, but now I have my a landline based internet connection I no longer need it!
Doesn't come with any data / time / credit, but does come boxed and with all paperwork and top up card!
Take a look on the Tmobile website, but Tmobile in my opinion the best mobile internet provider due to the fact there are no charges for going over on your data allowance. Multiple pricing available for single day / week / month use, and their latest any 7 days, where you purchase a 7 single days for the price of a week and use it for any 7 days in the next 30 days.
£11 inc P+P (£10 + £1 P+P)