Number of known panels
Before the beginning of the Beckensall Archive of Northumberland Rock Art Project, the number of rock art panels thought to exist in Northumberland varied between 250 and 450 panels. The discovery of more panels during fieldwork by Aron Mazel and Stan Beckensall, the re-assessment of Beckensall's recordings in the field, and the provision of additional site information by colleagues, farmers, and members of the public took the total to just over 1000 known panels. The NADRAP Project has now added approximately 200 records for Northumberland, and around 300 panels were also recorded in County Durham. This brings the total for the two counties to around 1500. Approximately 2500 carved rock art panels have been recorded in England with examples in Yorkshire, Derbyshire and Cumbria, and a few occurring in the south west. Many more are known in Scotland, Ireland, and Wales.