Whithaugh park is very popular with groups for residential stays and day visits and has a huge range of advenutrous activities available on site.
The accommodation is set out in Scandinavian-style wooded lodges called holmes. Each holm is arranged in a cluster of lodges with kitchen, dining, meeting/activity and accommodation lodges. The centre has 192 beds in 7 holmes so these's bound to be a combination to fit your group.