This is a handsome old apple variety from Barnack, a small village in Lincolnshire (although now part of Cambridgeshire). It has a sharp flavour and is best used for cooking.
Apparently, on its native soil, Barnack Beauty did not crop particularly well, although it has a repuation for doing well elsewhere! This probably reflects the fact that whilst it tolerates the chalky soil of Barnack better than other varieties, it still prefers a less alkaline soil.
Thanks to Jen Birch for correcting us, apparently Barnack was never part of Lincolnshire although it is very close to the border.