[4] In 1993 the council sold the company to the GRT Group, who in April 1995 became part of FirstGroup.

[5] During July 2013 it was announced via Northamptonshire County Council's website that route 4 would be withdrawn on 11 August.

[2][3][6] Following the withdrawal of a number of services during June 2013, some vehicles were transferred to other FirstGroup operations.

Following further reductions in services during August 2013 a number of older vehicles including the three remaining Volvo Citybuses followed.

At the time of the final services being withdrawn the fleet consisted of nine Wright Axcess-Floline bodied Scania L113CRLs.