Thorny, primocane-fruiting blackberry. Origin: Hargreaves Plants, Spalding, Lincolnshire, UK by J.R. Clark and J. Fairlie. A-2292T × APF-44; crossed 2005; selected 2006; tested as HPB3; introd. 2010; USPP 23,497; 26 Mar. 2013. Tree: erect; thorny; primocane fruiting; vigorous; productive. Fruit: oblong to blocky; very large, up to 14.5 g; uniform drupelet size; attractive; good flavor; soluble solids 11.5 °Brix; ripens late season on primocanes and fruits until frost fruit or cold conditions terminate ripening; recommended for commercial markets for shipping as well as local market and home garden use.