We can get the C-Zero (Citroen version of the i-Mev) for £149 (+VAT @ 20%) per month on a
3 year / 30,000 mile contract.
This is the leccy car dilema though - I could use one of these on an average day (~45 miles round trip commute) but then I would still need to keep George for the other times when I have to go further (Mrs A needs the Prius - her job involves driving places).
Which is probably why the only i-Mev, Peugeot iOn or Citroen C-ZERO on the roads are run by a local college from one site to the other.