As Small_Steps said, looks like the market is working! This is excellent, we need more cases of this type. As often the case, innovation comes up from the small entrepreneurial companies with bright ideas.
Good to see it coming from England too. We've gotten too used to thinking of Japan and Germany as leading the world in vehicle designs, though the UK still has an edge in a few areas of heavy industry, for example JCB excavators.
And it looks nice in Post Office and Police liveries too; in both applications it would certainly have advantages. The stop-start driving of postal work, and the need for stealth in police work, both favor electric vehicles.
In fact both are cases where every characteristic of their driving favors electrics. Stop-start, high acceleration and (in police work) bursts of high speed, quiet, stealth, one driver plus relatively light cargo, fleet management, local radius of operation. The larger postal vans and police vans could be replaced with slower-speed electric vans. Surprising that this all hasn't caught on faster.
The Flevo seems like a good one also; pedal/electric hybrid.
Go here and see a pedal-powered local-delivery vehicle right here in Berkeley California USA (second picture on the page):
http://flevofan.ligfiets.net/en/ch4-05.htm
Pedal Express is a local parcels carrier that has achieved decent success in the Bay Area. They serve many local businesses and a few local government agencies, and they're often the fastest way to ship stuff in the area.
If you look through the history of early automobiles and trucks, they were often open vehicles with no cab or enclosed compartment for driver, passengers, and goods being carried.
What we also need, are scooter-based enclosed cars & light trucks. I would buy one of the latter in a second if I had a place to park it. For my application: seating for two, and rectangular space for four cubic yards of materials, and the enclosure would have to be rigid and lockable. A radio would be nice for getting news reports while on the road.
For another variation on the overall theme of micro-vehicles, put the word "Isetta" into a search engine. That's the car that saved BMW from bankruptcy after WW2. See also "Messerschmitt Cabin-scooter" (go to a pictures search and input "Messerschmitt", they are famous for aircraft but you'll recognize the micro-car when you see it).
High-efficiency electric scooters, pedal/electric hybrid bikes; all of this stuff shows why engineers and geeks tend not to be fatalistically grim about the future.