Unlike our usual white flowered strawberry, this species has yellow flowers and the fruits are lacking the appealing flavour.

Potentilla reptans

Fleshy red fruits; epicalyx segments three-toothed at apex

Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.

Usually found as an escape from cultivation, and often close to habitation.

The yellow flowers are produced in mid spring, then sporadically throughout the growing season. 

Perennial.

Widespread but infrequent in England and Wales as an escape from cultivation.

Infrequently recorded escape from cultivation in Leicestershire and Rutland.