The admins will give you a much better answer than I'm about to attempt but I've always suspected that the logbook uses both the guidebook grade and the voted grade in different scenarios for whatever reason.
Product News OutDoor 2019 - Final New Product Roundup
Fri Night Vid The Story of Mikey Schaefer
Our Friday Night Vido this week follows the climbing of Mickey Schaefer, put together from ten years of archive footage from Mickey's climbs. These days, Mickey is known as 'the guy who can't watch' from Free Solo, but his climbing career extends further...
Digital Feature The Finest Crags in the UK & Ireland: Curbar