What is now designated the A31 along the Hog's Back originally formed part of a road leading directly from Winchester into Guildford High Street and from there into London. However, the modern A31 adopts a slightly less direct and less steep approach to the High Street, and reorganisation of central Guildford into a roundabout road system centred on the Friary Centre (named after the medieval Dominican Friary there) has also broken up this direct stretch of road at the point that it reaches Guildford.