Salvation Army celebrant, non-denominational wedding?

Hi all, I'm getting married in October, and I have a lovely acquaintance who has just told me she's a celebrant. She is registered on the Attourney General Celebrants register as an "Authorised Celebrant - Ministers Of Religion For Recognised Denominations - The Salvation Army". Neither I nor my partner are Christian, let alone members of the church, but she is becoming a close friend and I'm wondering if it would be unheard of to have a Salvo minister marry us in a non-denominational wedding?