@ John
It's an ECI cab, I won't be sorry to lose it. And if say, in a year's time I do need a wired connection then hopefully someone else will have my connection and I'll somehow find myself on a Huawei cab.

And my average is around 100 gigs per month so I don't foresee a problem with that, given what I've been reading on the TBB thread.
The selling point for me is the "Go Roam Around The World" part of the plan. I'm in no way any sort of globetrotter but I am off to New Zealand for a month later in the year so getting the sim means I don't have to faff about getting a sim over there.

@ B*cat
Will do.

My current mobile service is with PlusNet too and it seems to give me around about the same speeds up and down (~10Mbps). I'm hoping (fingers, toes... and eyes... crossed) that looking at coverage checkers for both services, I'll get that bit more out of 3.