Hello Secretwhisper: I have an internet friend who lives in the U.K. He works at a school for troubled youth. I e-mailed him & asked if he knew of any treatment programs for persons who self harm. He sent me two possibilities. Perhaps you are already aware of these. But, in case you're not, they are:

MIND: Mind - Home

and:

Priory Group: Self Harm Help and Support | The Priory Group

I don't know anything about these organizations myself, However, my friend, who is an older man & very reliable says both have good reputations. The Priory Group treats some of the students at his school. I'll let you know if I come up with other possibilities. Hope you're okay...