Just saw an advertisement about 'Mobile broadband', and was wondering if it is like a wireless modem plugged into a USB port, connecting you to the internet if within the service provider's coverage?

If so, I was thinking that it would be a useful tool when away from home, especially at Toyfair.

Are there any recommended pre-paid packages? Like, pre-paying for X amount of Mb/Gb (not a 'plan') - so that I can just use it up at my own leisure (I have internet access at home, so don't need to be on another Plan).

If I have the chance tomorrow, and find a phone store, I want to see if I can get something so that I can post details from Toyfair as soon as possible at the venue.