In many cases where permission has been granted to build a new store, a sum of money will be paid to the local authority by the supermarket chain to spend on community facilities through a planning arrangement known as a section 106 agreement.

BBC: Growth of the 'big four' supermarkets

However, a scheme to provide southbound cycle facilities has recently been implemented on Penton Rise which has narrowed the carriageway and is expected to reduce speeds on this section of the gyratory.

BBC: Mayor Boris Johnson at odds with TfL over cycle safety