 Noël was joined in her charity work by other leading figures in London society, including Lady Londonderry, the Duchess of Devonshire, the Duchess of Marlborough and Lady Juliet Duff.In 1911 Noël began her long association with the Red Cross, establishing a branch in Leslie and endowing it with three ambulances.This led to a larger ambulance corps serving Fife, called the Countess of Rothes Voluntary Aid Detachment.