Affluent Big Four partners lack ‘fire in the belly’ to disrupt consulting market Advisory The trend of Big Four partners leaving to launch boutique consultancies has accelerated in recent years. But Q5 co-founder has told City AM that many will struggle to build true challenger brands without an “all or nothing” approach. Five founders, including managing partner Olly Purnell, launched boutique consultancy firm Q5 at the height of the global financial [...]