An ING analysis on the latest Brexit developments says:
Another key Brexiteer, the Foreign Secretary Boris Johnson also quit this Monday in another big setback for the Prime Minister's authority. But keep in mind that there is a sense that his support among governing Conservative MPs has been waning, particularly after derogatory comments about British business were made public.
I know of several cases of Johnson making derogatory comments, but I'm not certain which comments the article refers to.
Does anyone know specifically which comments the above quote refers to?