Here is an interesting article from three years ago that describes many of the development plans that Peterborough is still talking about today. It is a good roundup of the story so far. One or two of the voices have changed, but the song remains the same. Here they posit a supermarket on a site adjacent to the railway station.
“The 40,000 sq ft shop unit will be let to a food retailer that leads the way with its environmental agenda. Energy from the foodstore will heat the offices above.”