Jeremy Corbyn's comms chief just broke the number one rule for spin-doctors
The firebrand journalist has no previous experience in communications, let alone running the media operation of a major political party.
And today, his inexperience showed when he made a big mistake while Corbyn was being interviewed on Sky News - he video-bombed him.
The number one rule of being a spin doctor is to always be behind the camera.
Here he is appearing over Jeremy Corbyn's shoulder.
Then casually walking behind his leader.
He tries to hide his face as he passes the camera.
You can watch it happen below: