Accessing custom fields from User Model
Response via Slack from Brandon Kelly:


  Accessing custom field values from PHP is the same as in Twig - once you have the UserModel it's just $user-&gt;myCustomFieldHandle
  or $user-&gt;myEntriesField-&gt;first(), etc.


Managed to get via following: $user-&gt;company-&gt;first()-&gt;title