UK Teen Steroid Users for University Documentary Interviews

Anyone (UK based) regret hopping on or glad they did? I'm based in Manchester and am creating a documentary for my final major project at University on the steroid epidemic amongst teenagers. I am absolutely not looking to simply villainise them and say you shouldn't take them under any circumstance and want a balanced opinion on them. I am happy to hide identities and voices if you wish but would love to speak to those on both ends. I would happily travel across the UK to get interviews if necessary. Let me know if this is possible.