The Volt is OK, but £2K is a lot for a relatively old fashioned battery behind the seatpost Chinese hub bike.
Designs from companies such as woosh and Kudos are more modern and cheaper.
Or for £2K you can get a genuinely good quality crank drive bike from the likes of Cube, KTM or Haibike.
Cubes in particular are good value.
I don't know how much time and trouble you want to take over the purchase, but the Cube Centre as part of Infinity Cycles outside Durham City is 'only' across the Pennines from you.
It's a proper bike shop and they have a reasonable stock of Cube ebikes.
In terms of local purchase/support you could do worse than the Electric Bike Centre in Penrith.
The website is not very exciting, but the guy who runs it - on behalf of a local businessman - is helpful in terms of advice and test rides.
They go into semi-hibernation 'appointment only' mode at this time of year, but all that tells you is the owner is not greedy and is content for the business to trundle along.
http://www.electriccyclecentrepenrith.com/
http://www.durham.cubebikestore.eu/
http://www.voltbikes.co.uk/pulse-x-hybrid-electric-bike.php