There seems to be some confusion here between the length of Cotswold Road North.

Cotswold Road North is much shorter being between 51.43980555555556, -2.5948611111111113 and 51.43855555555555, -2.5960555555555556

Cotswold Road is much longer beginning after 51.43855555555555, -2.5960555555555556 and continuing along until crossroad at Brendon Road.

Source: OS via http://maps.bristol.gov.uk/knowyourplace/?maptype=js