1. I previously had a UK (Orange) SIM card which was impossible to activate without a UK credit card.
2. On non-contract plans, many of the UK networks seem to disallow use of "Personal Hotspot", which would otherwise be the easiest way to get my laptop onto the Internet.
Does anyone know of a SIM card and plan I can get which is suitable for short-term visitors and which allows the paid-for data to be used without too many restrictions?