The Grand National isn't the most prestigious horse race in the world for nothing. It's an incredibly challenging course, featuring 30 jumps (16 fences, with 14 of those being jumped twice) on the four-mile and two and a half furlong race.
But, while safety improvements have been made in recent years, the Grand National remains a challenging task if not done properly. As such, seeing horses fall at some of the hurdles is no rare sight.
The Grand National race had been delayed due to protesters on the track. About 15 demonstrators were reported to have been on the course. Follow what happened here.