O2 have some refurbs in stock. Along with the Galaxy note they also have the LG G3 for £192.
For those who don't know, you need to take out a device and airtime contract under an O2 Refresh deal. Once you receive the phone, you can cancel the airtime contract within 14 days (you can also use the sim up until this time). When you do this, you must then pay the balance for the device contract. In this case it will be £216. After this the device is yours and you won't have to pay anything else, except a few quid for the days which you had the sim for.
I advise that you apply for an unlock code after activating the sim and before cancelling, but you may be able to do it without activating.
Please take the 5GB or 8GB tariff.