According to Public Attitudes to Electric Vehicles survey, 0.3% of respondents in UK own an electric vehicle, but 1% would like to buy one quite soon, which indicates that sales could triple.
Another 4% are interested, but don't know when they will buy. This could translate to strong long-term growth rather than an EV revolution, especially since the majority of drivers didn't even really put thought towards buying an EV.
The largest obstacles preventing one from buying an EV remain the same - recharging time, range and price.
Looking more deeply into the report, we found that not all respondents had full driving licenses and those who had (679 from 962) answered slightly different:
Public Attitudes to Electric Vehicles - survey (drivers only)
More details in the report: Public Attitudes to Electric Vehicles