Noble Corporation

The Noble Corporation PLC Limited, Intergalactic was a made-up company that the Tenth Doctor and Donna Noble were allegedly part of to participate in an event to promote the Ood. Later, after extensive research, Solana Mercurio informed Klineman Halpen that the Noble Corporation did not exist. (TV: Planet of the Ood)

Behind the scenes
A does exist in the real world, based in London.