The following orgnisations offer Faith Based volunteering opportunities for young people.
www.christianaid.org.uk/getinvolved/volunteer/gapyear/gap_year.aspx
www.vinspired.com/?gclid=CJHQydWIpKkCFUIPfAodSTjluw
http://adventures.rockuk.org/volunteer
www.oscar.org.uk/opportunity/vacancies/agents.htm
www.muslimhands.org/en/gb/volunteering/
http://timebank.org.uk/youth-programmes