How do I buy Tmobile mobile broadband PAYG Data Allowrance?

you can get a payg sim and call t-mobile to change it to a mobile broadband sim. I think its £2 per day or £15 for 1 month of limited access.... believe first mth is£2...... call t-mobile on 0845 412 5000

Thank you very much. I got it sorted out that way. I only have to pay £2 for a day and get a month free (on promotion for new customer). Cheers.