Woods became the voice of nearly 3000 young people involved in the programme.
“I'm very aware that I'm representing something much bigger than me,” Woods said.
Woods, who had been a cadet from the age of six, said he couldn’t believe he had been given the honour.
“Once it started to sink in, I just felt incredibly grateful because I didn't get there by myself.”
The work really starts for Woods next year.
Being the National Cadet of the Year meant attending events, sitting in on panels like the National Youth Advisory Network, and gathering opinions from young people to feed back to senior managers and governance in the organisation.
The role came as the St John youth programme prepared to celebrate its centenary.
Mitchell said Woods was excited to support the celebration and spread the word about the programme
“I know that he really wants to be a great representative for the young people.”