Explorer Scouts are young people, usually aged between 14 and 18 years old - and these make up an Explorer Unit. "Flexible" is what best describes this section.
Units are generally linked to Scout Troops with in a District but can also form extra units, which are based around various activities i.e. climbing/cycling etc. This enables members to be part of several units, depending on their particular interest. More so, they are able to fit scouting, around sitting those all-important exams.