Talk about it here.
The Conglomerate was an Earth-based intergalactic corporation, a business empire and a self-perpetuating causal loop created by Cuthbert, himself a self-perpetuating causal loop. It was responsible for providing healthcare, education, and infrastructure, creating trade treaties that prevented intergalactic wars. The Black Guardian explained that the Conglomerate was so entangled in galactic events, its removal from history would cause inestimable chaos and tear the balance of reality apart. (AUDIO: Casualties of Time)
When the Laan were diverted to the Earth by the Gateway, the Conglomerate tried to destroy them. The Doctor and Romana were able to convince the Laan to leave Earth before that happened. (AUDIO: The Sands of Life, AUDIO: War Against the Laan)