Many thanks. It begs another question as to how reliable are Kalkhoff bikes?
Mine was delivered in April 2014 to the original buyer so, I bought it used but I transferred the warranty and ownership with 50cycles (a simple phone call with email confirmation).
The bike is heavy but solidly built. There is nothing wrong with it after 1500miles total other than that the 17ah battery has been diagnosed as faulty (30 cycles according to their plug-in diag machine).
50cycles tested it and are sending a new one to my local Bristol shop to arrive tomorrow. All under warranty. If you don't have the warranty you can buy the same battery from them for £799.
I still have my 9.5kg Boardman pedal bike, which was £1000 new and it's much much more solidly built than that, and the Boardman is an excellent pedal bike.