New British Atlas
This is a re-use of the maps used in Gough's version of Camden's Britannia, 1789. A new Imprint has been added under "Authorities", but that's the only change.
Displayed scale of 10 miles = 94mm, or 2.7 miles/inch; actual scale = 2.8 miles/inch, or 1:177,000.
Being a 1789 map, the longitude is still from St Paul's, not from Greenwich.
The Atlas was published in 1806, and reissued in 1809 and 1812.