England | Northern Ireland | Scotland | Wales |
---|---|---|---|
5 groups of 11–15 year olds | 1-group of 11–15 year olds | 1 group of 11–15 year olds | 1 group of 11–15 year olds |
5 groups of 16–24 year olds | 1 group of 16–24 year olds | 1 group of 16–24 year olds | 1 group of 16–24 year olds |