Lliw Mill Trout Farm sits on the banks of the Afon Lliw near the village of Pontlliw, drawing water from the river via a feeder stream controlled by an old sluice gate.

The farm raises rainbow trout in stew ponds and serves as a recognisable landmark along this stretch of the river, not far from the M4 motorway bridge between junctions 47 and 48.

The Afon Lliw here also sees a small run of salmon and sea trout late in the season, and the farm's proprietor has occasionally found sewin among the stew ponds — a reminder that this modest lowland stream has more to offer anglers than its unassuming appearance suggests.