Since it was legalised five years ago hardly any patients in the UK have been prescribed medical cannabis.
Used to treat a number of medical conditions, the Government has been accused of misleading the public over its availability on the NHS.
Campaigners say an exception has been made for a few patients but others are being forcing to fund it themselves, go without or turn to the black market.
The UK government says safety needs to be proven before a wider rollout.
