Individuals and teams eligible to have contributions accepted into the Ubuntu Font Family project, either by way of direct contract, or through agreeing to the copyright assignment form. (Copyright is necessary in this case to allow for subsequent relicensing of the Ubuntu Font Family):

  http://www.canonical.com/contributors

and mailing this to:

  <email address hidden>,
  Iain Farrell <email address hidden>,
  Paul Sladen <email address hidden>