Original sentence: He remained in this post for less than a month before being appointed group programming and marketing director of LDC Midlands which own BRMB, Mercia FM, Wyvern FM and Beacon Radio in the West Midlands and Heart 106 in the East Midlands
Edited sentence: He remained in this post for less than a month before being appointed group programming and marketing director of Orion Media which own BRMB, Mercia FM, Wyvern FM and Beacon Radio in the West Midlands and Heart 106 in the East Midlands