Who says you can work using mobile broadband? In fact there are business dongles available so that everyone can enjoy mobile broadband
. Business dongle deals are meant for business use and therefore, the monthly fee would be slightly more expensive than for household use. However, the best part is you don't have to pay additional fees for setup or activation. Everything is included in the monthly fee so you only have to pay one rate.
You can sign up for a contract of 12 months or 24 months and the rates depend on the length of your contract. If you are running a company, consider getting a business broadband dongle deal from Mobile Phone Deal
for your office use to save more money.