Mandelson is First Secretary of State, Secretary of State for Business, Innovation and Skills, Lord President of the Council and daily advisor to Gordon Brown.
He also sits on the following Cabinet committees:
National Economic Council
Better Regulation
Democratic Renewal Council
Domestic Policy Council (which he deputy chairs)
Domestic Affairs
Borders and Migration
Communities and Equalities
Food
Families, Children and Young People
Health and Wellbeing
Justice and Crime
Local Government and the Regions (which he chairs)
Public Engagement and the Delivery of Services
Life Chances
Talent and Enterprise
Economic Development
Environment and Energy
Housing, Planning and Regeneration
Olympic and Paralympic Games
Productivity, Skills and Employment
Constitution
National Security, International Relations and Development
Europe
Overseas and Defence
Africa
Afghanistan and Pakistan
Trade
Protective Security and Resilience
Public Services and Public Expenditure
Public Sector Pay and Pensions
Pandemic Influenza Planning
Post Office Network (which he chairs)
Flood planning
PM's ad hoc Committee on International Climate Change
PM's ad hoc International Climate Change Negotiations.
After all that, does it matter that he is closing Downing Street's curtains while Brown is up the road in Cumbria.