The former health secretary Wes Streeting claimed the current system is not fair, penalises work, and demanded a radical transformation of the tax system.

The former health secretary Wes Streeting claimed the current system is not fair, penalises work, and demanded a radical transformation of the tax system.

The former health secretary’s latest intervention will be seen as a bid to win over the left wing of the Labour Party and see off the threat from Andy Burnham