The activist investor pushing for a break-up of Vivendi wants the French media group to spin off its Universal Music Group division to take advantage of investor excitement over the future of streaming music.

UMG, the world's largest music group and the home of top acts ranging from Sam Smith to Lorde, is 100 per cent owned by Vivendi. Arnaud de Puyfontaine, chief executive of Vivendi — which also owns Canal Plus — recently said the music company would be sold "over my dead body".