John McDonnell's business credentials took another hit on Friday when the shadow chancellor struggled to name a single one of his 'business heroes' in an interview with the Financial Times. The pause was so long that McDonnell's press adviser eventually came up with a suggestion for him – 'Vince Dale', the renewable energy entrepreneur:

Only there's a problem. There's no renewable energy entrepreneur by the name of Vince Dale. Instead, the person in question goes by the name of... Dale Vince.

Mr S suggests the pair learn the entrepreneur's name before going in for a business endorsement...