A downhole apparatus comprising a body (12) configured to be coupled to a production tubular and an upper opening and a lower opening. First (28a) and second (28b) flow paths are provided between the upper opening (22) and the lower opening (24) in the body, and a flow diverter (34) is arranged to direct downward flow through the body towards the second flow path and away from the first flow path. A filter device (31) in the second flow path filters or collects solid particles in the second flow path from passing out of the lower opening of the apparatus. The apparatus has particular application to artificial lift hydrocarbon production systems, and may be installed above a down-hole pump in a production tubing to prevent solids from settling on the pump during pump shutdown. Embodiments for use with ESPs and PCPs are described.