RotoSound on the A22 near Sevenoaks railway station makes guitar strings. Bridge Chemicals at Old Powder Mills in Leigh was SmithKline's UK manufacturing division; as GSK it shut in 2010. Salter Housewares (weighing equipment) is in the east of Tonbridge at the A26/B2017 roundabout in Tudeley, Capel; Adrian Scripps produce apples off the B2017 near the A228 east of Tonbridge.