A campaign spokesperson said:

“In all honesty it's slightly comic that Boris Johnson is visiting his ambassador in the West Midlands, whose big transport boast was to lay a mile and half of tram track last year. 

"There are literally snails that cover five times more ground than that in a year." 

"What's clear is that the same Tory government, the same Tory prime minister and the same Tory mayor are just going to deliver more of the same. When what we need is a plan that meets the moment for a new future of the heart of Britain."