Sadly he was not hallucinating he had the plans from Waitrose in his hand !
According to the Robinson's web site, Peter Robinson joined the company in the early fifties. That would make him probably in his eighties now. The site makes no mention of any subsequent Peter.
Why would a, probably retired, member of the Robinson family have unsubmitted plans from the John Lewis partnership in his hand?
Mind you, if its true, and they were to submit plans quickly and get them approved, that would probably scupper Asda's chances of getting their plans approved. As we would already have two supermarkets (or one and one being built).