Cox Plate and Melbourne Cup winning jockey Ryan Moore will miss major meetings in Britain because of neck injuries suffered in a barrier mishap.

X-rays cleared Moore of serious damage but the three-time champion jockey is expected to be out of action for some weeks.

He suffered the injury when his mount, Newton's Law, reared up and became trapped under the stalls before the final race on the opening day of the July meeting.

While Moore walked away from the scene, he was reported to be complaining of pain in his neck.

"He had further check-ups but everything's fine," the rider's mother, Jayne, said on Thursday.

"He's a bit battered and bruised but he's fine. Hopefully he will be back soon, but I don't know how soon. I've no idea.

"I'm sure, knowing Ryan, he won't be back until he's 100 per cent."

Moore who won last year's Cox Plate on Adelaide and Melbourne Cup on Protectionist, had been favourite to win his fourth champion jockey title.

Silvestre de Sousa has now been promoted to odds-on.