Labour is “being recognised as the natural partner of business”, declared Rachel Reeves today, as she delivered her first major speech of the election campaign and vowed to lead the most “pro-growth Treasury in our country’s history”.

Addressing an audience at a Rolls-Royce factory, the shadow chancellor – who labelled her party both “pro-worker and pro-business” – vowed that there would be “no additional tax rises” beyond those she has set out if Labour wins the general election.

Reeves gleefully pointed to a letter published in The Times today, in which 121 business leaders have endorsed Labour’s economic plans.