[He draws himself up, clearly irritated.]

Don't be ridiculous, I'm clean, and I have never been a junkie.

[John wouldn't even know he used to have a drug habit if Lestrade hadn't conducted that ludicrous false raid, and even then they hadn't found anything. He'd rather that John believe he did weed or some other such 'soft' drug, the disappointment would be irritating otherwise.]

I doubt I shall be on the list, we've only known one another a short time, it will be dedicated to those of importance to you.