Wannabe Julien Absalon’s are being warned to stay off the London 2012 cross-country course by Essex Police.

The Hadleigh Farm venue was completed in March but amateur riders have been told to keep away from the fenced-off course.

“We don’t want anyone getting injured in the run up to the Olympics and we will be patrolling the area at regular intervals,” said PC Chris Bramhill, from the police cycle team.

The 5km track features rocky, root-strewn drop-offs, tight, singletrack ascents and lightning-fast, swooping berms, built by course designer Martin Seddon and his four-strong team.

“It’s a challenging course that will bring out the best in everyone and should make for a fantastic race for both the riders and spectators,” said British rider Liam Killeen, who received a sneak preview when the course was unveiled.

The post-Games future of the £800,000 venue has yet to be confirmed, although Seddon hinted to Bikemagic in March that the black-rated trail will remain in place.

Hadleigh Farm will be put through its paces on July 31, with a 5,000-capacity test event involving 100 of the world’s top riders. Tickets, costing between £10 and £20, go on sale tomorrow through Ticketmaster.