If anyone needs a budget data sim with some data allowance this one is definitely one to look at.
That's if you do not mind being bound by a 12 month contract.
I was looking at data sims from EE, Plusnet and Virgin Media as other providers do not have great coverage where I live. Up until late 2016 it was rather difficult to land with a sim with a reasonable data allowance. Now apparently you can do below a fiver.
Also what I find really handy is unused data rollover where you are allowed to use unused data from last month!
If my understanding is right you can use it in a tablet but also in a data dongle device.