Complex sentence: There is a large factory here, originally called Carters, then Beechams, then GlaxoSmithKline, and now owned by the Japanese firm Suntory, and is the sole production facility for Ribena and Lucozade.
Split into simpler sentences: There is a large factory here, originally called Carters, then Beechams, then GlaxoSmithKline, and it is now owned by the Japanese firm Suntory. It is the sole production facility for Ribena and Lucozade.