<Dd> Sir Peter Harrison </Dd> <P> Source: Chelsea F.C. </P> <P> Upon winning the 2012--13 UEFA Europa League, Chelsea became the fourth club in history to have won the "European Treble" of European Cup / UEFA Champions League, European Cup Winners' Cup / UEFA Cup Winners' Cup, and UEFA Cup / UEFA Europa League after Juventus, Ajax and Bayern Munich . Chelsea are the first English club to have won all three major UEFA trophies . </P> <Ul> <Li> First Division / Premier League </Li> </Ul>

How many times have chelsea won the european cup
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