This is the SIM i was going to get
http://www.amazon.co.uk/Original-Broadband-Preloaded-Mobile-Devices/dp/B003Z0T3X2/ref=sr_1_1?ie=UTF8&qid=1353428079&sr=8-1
then stick in a dongle.
As it’s specifically for mobile internet, I can’t see an issue with tethering, and it’s not mentioned in the Ts&Cs
If I use my netbook, all is good. If I want to use a tablet, I either need to connect the sim /dongle to the tablet itself, or plug it into the netbook, then tether the tablet to the netbook.
Not too worried about there not being a full size USB connection, more about there being no USB at all, not even the micro USB you get on the samsub S3 for instance
Edit – my bad
Our Pay As You Go plans don’t allow tethering