If e-voting is NOT currently being used, what is the current status of e-voting in general?

United Kingdom
Answer
E-voting is not used but feasibility studies and/or tests are being/have been carried out (see comments)
Source
http://www.computerweekly.com/feature/E-voting-The-peoples-choice
https://www.yourvotematters.co.uk/how-do-i-vote
Comment
In the UK, legislation currently prevents electronic voting in general elections, but the technology has been well tested in 17 pilot projects during local and European elections.