Hi guys, sorry to bust in on your wee gab here, but from what we discovered on our hellish but so worth it road to finally receiving our visas, is that ANY drugs convictions is a visa rejection, but i'm not sure about holiday, student or similar visas, i only know for sure that any sort of permanent residency visas regarding drugs convictions is a big no no.
Regarding prison, depending on what you were banged up for obviously , you can still get a visa as long as you haven't been to prison more that twice in some cases believe it or not!!!