Boris Johnson has rubber-stamped the approval of controversial proposals for the old Hornsey Depot site.

The controversial plans would see more than 438 flats, a Sainsbury’s supermarket and an accompanying car park built on the 3,250sq ft former refuse depot.

Boris Johnson gave the go-ahead to the proposals to transform the derelict site last month, after he took “all representations” into account.

A City Hall planning officer said representations were “finely balanced" against the strategic planning merits of the case – merits which were thought to outweigh residents’ concerns over the scheme.

The decision angered Lynne Featherstone, MP for Hornsey and Wood Green, and Hornsey councillor Monica Whyte, who both wrote to Boris to ask him not to approve the application in its current form.

They repeated the concerns about the quality of development, housing density and impact on local trade and traffic.

Ms Featherstone said: “It’s appalling that such a flawed application has been waved through by both the Labour Council and now, the Conservative Mayor.

“The Liberal Democrats in Hornsey will keep representing local residents and fighting for changes to these plans.

“We will be going back to the developers, and I’ll be writing to Sainsbury’s to ask that they recruit local residents to work in the store once it’s open.

“It is so important that local residents benefit from this development as much as possible.”