It’s no fad, in 10 years time you will be able to buy full plant products (legally) in the uk IMO. The global cannabis industry is lobbying pretty hard here now and the UK market is seen as desirable (we’re a bunch of stressed, sick pot heads!). Also the money going into R&D for medical uses is increasing and more research is being done now that laws are becoming more relaxed.
The first step came last year when medical marijuana was (sort of) legalised. Once or if the evidence base is established for different conditions, the NHS might even prescribe it. It’s just a matter of time.