Sex offender therapy in prison?

I'm a convicted sex offender and have been in psychiatric hospital for over two years. In the two hospitals I've been in the focus of treatment has been to cure my psychosis and get me off drugs which has been achieved. I'm going to be transferred in the next few months to prison in the UK to begin my 15 years sentence. I am only 21 I was 18 when I committed my offence. I admit my guilt totally and deeply regret what I did but when I get out in my thirties I want to be cured not just done my time. will I get therapy to not re offend m