We have bought 3 sets of the 2.1 kits but dont seem to have found any/many sites in the UK which are live. How many kits have been sold and up and running for a reasonable periods of time?
An example is given in this other thread, for sites in the UK, with the SCK2.0 (development version of the V2.1):
Milford - Surrey SCK 2.1 : https://smartcitizen.me/kits/9599
As of a few minutes ago:
Glasgow SCK2.1: https://smartcitizen.me/kits/9875
at Kelvingrove Park