The oldest surviving structures in the parish date from the 18th century, both of which are milestones showing the distance to central London. In 1745, when the Jacobite rising had made manifest to the government the shortcomings of the roads for the rapid transport of troops, the route through Mitcham and Sutton to Banstead Downs, which had been the scene of a failed royalist rising by the Earl of Holland in 1648, was measured and milestones were erected. The first milestone is situated at the northern end of the High Street opposite the junction with Benhill Avenue. On the east side is the inscription: "Whitehall XI Miles. Royal Exchange XII Miles." The second milestone can be found on the west side of Rose Hill next to Rosehill Park, heading north out of the parish towards Rosehill. On the east side is the inscription: "Royal Exchange XI Miles. Whitehall X Miles." and on the northern side the date "1745" is also just legible. More writing on the north and south sides, probably showing distances to other towns and villages in either direction, is no longer legible. They are two of a series of milestones that marked the road from Westminster and London Bridge to Banstead Downs and, from 1755, the route of the turnpike road to Brighton.