Double Negative VFX (often shortened to DNeg) are a British Visual Effects company that first opened in 1998 with 30 people on board. They've since expanded to become the largest European VFX studio with more than 750 people in their staff. Their website is here. See also Ghost VFX, an effects studio that DNeg worked with several times.
the company's effects work can be sampled in:
Tropes Double Negative are known for: