# The Nub

The Nub is a business mentoring and coaching firm based in Guildford that specialises in helping consulting business owners break through growth barriers. They work exclusively with consulting firms—businesses built on expert knowledge and client delivery—addressing the specific challenges that prevent these firms from scaling beyond £5m revenue.

The business serves consulting firm owners who are either stuck on a plateau or frustrated by their current trajectory. Many started their consulting business for lifestyle freedom but find themselves working harder than ever whilst earning less than they deserve. The Nub's core insight is that scaling a people business requires a fundamentally different approach than most owners intuitively apply.

What sets The Nub apart is their deep understanding of consulting-specific challenges. Rather than generic business coaching, they tackle problems that actually matter to consulting firms: project margin erosion, scalability of bespoke service delivery, client concentration risk, and the trap of founders being too embedded in delivery to build the business. Their founder, Marc Jantzen, has personally navigated this journey and works from hard-won experience rather than theory.

They offer three main interventions: one-to-one mentoring for immediate business challenges, a structured 12-month transformation programme, and comprehensive business evaluation with growth strategy development. Their stated formula claims to help the rare consulting firm that succeeds at scaling—only one in seventeen typically do.