Re: @ Mister D
Not just TV reception equipment, but also for streaming TV programmes as they are broadcast or use of iPlayer (other catch-up services do not require a licence). If you use a phone to watch "live" TV progs or watch the Internet, it still needs a license although a home one does cover you for roaming on mobile devices as long as its running off batteries.
It's unclear to me if I take my laptop to a friends house (who doesn't have a licence) and I stream live TV whether he has to divert his eyes away from the screen...