Needed a cheap solution to abroad form the UK and found these guys...https://www.globalcell.eu
They are giving away 2 pay as you go SIM cards with their starter packs. The network is great for international calls from your mobile and they even give you free credit every-time you top-up (up to £20). Not bad for anyone who makes regular calls abroad! You can also keep your existing number and transfer it for free.
Not sure how long the promotion is going on or so grab yourself a bargain soon!