SHADOW Chancellor John McDonnell unveiled his vision of “socialism with an iPad” yesterday, saying workers must benefit from Britain’s tech boom.

He said the popularity of apps such as Uber masked the “grim reality” of low-paid people working on zero-hours contracts in the “gig economy.”

Mr McDonnell conceded that “technological change, and the unfettered free market, are tearing up the old work contract” won by trade unions over generations.