George Pratt had attended his Scout group for ten months before being asked to invest in the group with his friends.
But because he is an atheist he refused to take the Scout Promise, pledging his allegiance to God, and was told not to come to any more meetings.
The 11-year-old says the snub is 'very unfair' and he is missing out on adventures because of his views.
But he defiantly added: 'I'm not going to change my decision.'
His furious father, Nick, 45, accused the Scouts of being 'narrow-minded'.
'Christianity is meant to be about being tolerant, forgiving and understanding,' he said. 'You are allowed to join if you are a Christian or a Muslim but you can't not believe in God.'