The undated sheet below is probably from a GPO Ledger and shows the mileages for the Exeter to Chester Cross Post and the Portsmouth to Bristol Cross Post.
Prior to the establishment of the first Cross Post from Exeter to Bristol by Joseph Quash in 1696, the Postmaster of Exeter, mail from Exeter to Bristol had to go via London (up one Post Road and down another). The cross post road was extended to Chester in 1701.According to R.C. Tombs in his book "The Bristol Royal Mail", a new branch post was established from Bristol & Bath to Salisbury in 1740, and by 1772 the posts at Salisbury included mail from Bristol three days a week; mail from Postsmouth also came three days a week. It wasn't until 1798 that a "Long" coach was established that went from Portsmouth to Bristol in one journey.
It is possible that the Ledger sheet above was created fairly soon after John Palmer's introduction of Mail Coaches in 1784, when detailed schedules had to be drawn up for the new coaches. The mileages on the Exeter - Chester post are to the nearest quarter of a mile, perhaps the level of detail required for coach contracts.

























