This grower is fairly sure of this plant identification.
Pot is a real terracotta (not plastic) 21cm pot. Good flavour thyme.
Garden thyme, Thyme
Thymus vulgaris (Garden thyme). This species produces very aromatic leaves, and grows to about 30cm high. The flowers are white to pale purple and are produced in late spring to late summer. The leaves are tiny and mid-green.
They are fully to marginally frost hardy. You should plant them out from early autumn through to early spring in a sunny site with moist, well-drained soil.
Border, ground cover, containers