Tom and Gary: Anglicized spelling
It's the little things that can trip you up. Both you guys obviously didn't reach the end of the memo, where you'd have found this footnote:
Footnote: This email was originally transcribed with English spellings standardised for a British audience. Following enquiries about this, we have reverted to the original US-spelling as in the document leaked to The Observer.
You're grasping at straws again.
--Robert