looking at the effectiveness of the legislation and policies whilst the substance is classed as drug but there are lower levels of arrests and the substance is available with high risk involved both in terms of health and criminal gangs involvement in the trade not only by the percived communities. health risk in the sense that the Khat is imported to the UK and other parts of the world where the substance has been classified as drugs?

my question is that - is what sort of methodological is applicable, thinking of using semi-structure interviwer and thematic analysis; through ontenology and episteomological of positivist and social constructionism? any advice of this topic