Ref: Caravan Ops In The UK
Some years ago, there was an attempt to start up a caravan operation feeding Fedex at Brussels, the CAA declined to accept an aoc based on the Caravan be it the 1 or Caravan 2.
As I remember, an Irish operator was using the Caravan and feeding for Fedex out of Shannon or maybe Dublin.
As has been stated the advent of flying commercially under VFR in the UK is a near on dead issue with the CAA.
I myself have significant experience in start ups, Business Plans and also in raising very substantial funding from the venture capital market .
Rogers Aviation at Cranfield may be able to assist further with enquiries respecting Caravan operations in the UK as they used to be the authorised dealers, and obviously did research on the topic.
Hope this is of some help, and if you require any further details, please do not hesitate to communicate.