Bear Grylls, the adventurer and TV personality, has been named as the Scout Association's new chief scout, succeeding former Blue Peter presenter Peter Duncan.
The association has split the role to enable a greater focus on volunteer management and building relationships with politicians.
Investment banker Wayne Bulpitt has been appointed the association's first UK chief commissioner, an unsalaried position with a brief to lead its 100,000 volunteers and talk to political parties and other charities.
Bulpitt, a former chair of the association, will have direct responsibility for managing regional volunteer managers, local managers and scout group leaders. He promised "increased support to those volunteers running our sections and units without whom there would be no scouting".
A spokesman for the association said: "Peter Duncan gave us some excellent profile but wasn't able to do all the volunteer management and support that a major charity needs.
"We've split the role so Bear provides the inspiration, motivation, publicity and day-to-day management of the organisation, and the relationship with politicians will be delivered through Wayne."
Derek Twine, chief executive of the association, retains responsibility for managing the organisation's 200 paid staff.