cannabis street warning

hello,

about 9/10 months ago i was stopped at a train station and searched and i had a small amount of cannabis on me so i was given a cannabis street warning.

This week though i will be attending an interview for a job and i ws wondering if anyone knew whether or not i had to disclose the warning at interview. I know you dont have to declare it on forms as it is not a criminal record but i was told it may come up on the enhanced criminal background check done (as the position is within the NHS) and i'm just worried about what to say!

Thanks

this happend in UK btw

put it in the past and forget about it man, a street warning... sounds like a tap on the wrist to me, shouldnt affect your job,