Figure 1.

English general practices with >1000 patients, and collaboration types. ^aPractices with >30 000 patients of whom 30% were aged 15–24 years (assumed to be university practices). ^bWorking at scale (to serve populations >30 000 patients) as single practices or in collaborations with other practices. All numbers have been rounded so as not to overstate the precision of the estimates. The purple boxes represent practices working at scale.