It used to be around 20.00 which is why we asked if riders could arrive by 19.30. The briefing only takes 10 minutes or so and usually covers any last minute notifications about roadworks, known diversions, weather updates, a reminder about receipt locations etc and is also a chance for riders to ask any last minute questions. As a contingency I was thinking of producing a print-out covering these points for riders who can't make it in time, so we could hand them out if they roll up later or even at the start in the morning.