Here's what they had to say:
"Avery Hill trails are at risk of being demolished. The Department of Education recently bought the land the jumps are built on and will not guarantee the trails will be preserved. There are real fears the longstanding BMX site will be cleared and the land used in plans for a new free school in Eltham - London’s BMX community are seeking assurance this won’t happen and the trails be allowed to continue on the site.
The trails have been on the site since 1996 and are used by hundreds of BMX riders from around the UK every year. Avery Hill BMX Club currently hold the lease for the land but this expires in January 2020
Please show your support by signing the petition to keep the trails in Avery Hill going for future generations of BMX riders in London. We’re asking the Department for Education to allow the trails to continue on the site they have stood on for 23 years."