Me and my friends (1 17 year old 2 16 year old) want to go on a caravan holiday in August this year but we can't find anywhere that will let us go as we need someone over 18 does anyone know any caravan parks that will let us go?

P. S. I live in Manchester in the UK and we want to be able to go a citybus or a train there (if we have to get another train that's not a problem)