Elixir Studios

1998:

• Founded by Demis Hassabis.

Jun, 2003:

• Mark Hewitt takes over the CEO duties of Demis Hassabis. Previously, Hewitt worked at Liberty Livewire, a provider of post-production services.

Apr 28, 2005:

• Officials from British developer Elixir Studios have announced that the company is ceasing day-to-day operations, as all remaining assets and IP are sold.
  
  Source: Gamasutra

Mar 03, 2006:

• Rebellion acquires the company's IP.