Rambert ages elegantly: it might just rank as the world’s oldest company devoted to modern dance (whatever that term might mean nowadays), but as it approaches its centenary, it’s still in great shape. Lean and hungry, open-minded and light-footed, it’s been lucky over the past 40 years to have enjoyed a stable succession of excellent artistic directors – Richard Alston, Christopher Bruce, Mark Baldwin and now the French-American Benoit Swan Pouffer – as well as policies that have healthily prevented it from becoming fixated on one choreographer or aesthetic.