The initial charge was raised from 2d. to 3d. The area of the penny post delivery was therefore restricted to the 10-mile circle from the General Post Office. Previously, towns within about 20 miles had been served by the penny post, but an additional penny was charged for all packets delivered in the suburbs.

1765 (5 Geo. III, Cap. 25).
For Great Britain—
  Not exceeding one post stage1d.
For England only—
  Over one and not exceeding two stages2d.

No change was made in other inland rates.

1784 (24 Geo. III, Sess. 2, Cap. 25).

The rates of 1765 were increased by 1d. for a single letter for distances under 150 miles, and 2d. for greater distances.

1796 (37 Geo. III, Cap. 18).
Within England, Wales, and Berwick—For a Single
Letter.
  Not exceeding 15 miles3d.
  From 15 to 30 miles4d.
  From 30 to 60 miles5d.
  From 60 to 100 miles6d.
  From 100 to 150 miles7d.
  Over 150 miles8d.
Within Scotland—
  In addition to existing rates1d.
1801 (41 Geo. III, Cap. 7).