Young biker died on Saturday at Longbridge Deveril just south of Warminster, he was seen close behind a blue car but ended up losing control and hitting a van head on. The blue car didn't stop and it is unclear of their involvement, awareness or if they bumped the bike etc, the best guess is that the bike was trying to overtake the car and lost control on gravel. The road was a 40 on an S bend just before the church, heading south.
Unfortunately it sounds a bit like rider error, lack of training/experience but whatever happened it's a sad loss.