Carlos Luis Zafon
Neil Gaiman & Ian Rankin (different event to above)
Alain de Botton
I don't think I can afford either the money or the time off work to go to all of them. Gaiman, Paxman, Cable and Brookmyre are must-sees, probably Coupland as well.
And Amanda Fucking Palmer is gigging in Edinburgh in August too, not coincidentally I expect, since she's dating Gaiman now. So right. So I want to go to that too; I've been loving the Who Killed Amanda Palmer album. (Spotify link, that one.)