Yeah, lie.

I still take drugs sometimes because they help me to open up. Sometimes I just waffle crap as a result but mostly it pushes me to be more honest and open. Services found out just before I was meant to start therapy and they made me wait. I think it has made things worse by refusing therapy for another 4/5 months. Don't tell them and get the therapy if you are ready.

If the drug problem is an issue then go to NA maybe? but most substances are emotionally addictive and so it is a little catch 22 without the therapy imo. I am not saying taking drugs is alright and I believe you should address this but....

Good luck x