O2 dropped a price for PAYG mobile broadband dongle - it's now £20. To get £35 cashback from Quidco you need to top up for £15 in first 30 days. Ot means you can get it practically for free (20+15 -35). All top ups include unlimited access to over 7500 Wi-Fi hotspots in the UK.
Be gentle on me - it's my first post