The Cheddar pink is a native wildflower of Cheddar Gorge and the Mendips. Its flowers are very popular with butterflies, moths, bees, beneficial insects and other pollinators. The leaves form a low, evergreen, blue/green mat (ground cover) and the flowering stems are up to 20 cm tall. It prefers full sun and well-drained soils that have not been improved. It produces pink flowers from June to July. 
 
Note: I usually grow wildflowers from seed supplied by a reputable source. In this case, my Cheddar pinks came from a cutting from one of my lovely gardening friends who got hers from cuttings from a gardening club in Pill. I have gone through the features used to identify this and similar wildflowers and it most closely matches the Cheddar Pink, however, a couple of features (width across the calyx and leaf width) suggest this is a hybrid (or introgressed). Please email me if you want to know more!