Milestone combines programme discipline with behavioural insight to strengthen collaborative delivery in complex construction and infrastructure environments.

The firm is led by Mick Underhill and Sally Calverley. Mick’s background as a Royal Engineer, followed by decades of senior commercial planning experience, shapes our disciplined, delivery-first approach. Sally draws on her Board-level experience and nearly twenty years of behavioural coaching to help leaders think clearly and act consistently under pressure.

That combination matters. It means we understand both the structural demands of major programmes and the human dynamics that determine whether plans actually hold.

But Milestone is not just the two of us.

Our wider team is trained to Milestone standards. Every planner and coach understands how intelligent planning, confident leadership and collaborative delivery contribute to performance. We work inside live programmes, often embedded within client teams, and we operate with the same discipline, discretion and collaborative intent wherever we are deployed.

We are collaborative by nature. Many of our team members work directly on client sites, navigating commercial realities and interpersonal dynamics daily. That requires strong communication, respect for boundaries and the ability to integrate into delivery teams while maintaining independent judgment. It also means we understand the pressures our clients face because we work alongside them.

Much of our work takes place in high-pressure or sensitive environments. We are accustomed to difficult conversations, tight timescales and significant commercial consequences. Clients trust us because we bring clarity without drama and structure without noise — helping teams move forward calmly and effectively.

Scroll down to meet the team.