About The PN Group

Founded in 2002, the PN Group was set up to deliver extensive leadership and team development programmes for businesses; from SMEs to global enterprises.

Our founders Derek Tree, a people development professional who was part of the team that built the Lloyds Banking Group corporate university, and Claire Keogh, a Chartered Occupational Psychologist, specialising in business psychology and executive coaching, continue to work to provide up-to-date, specialised training methods and assessment to our clients.


We’re the main provider of Birkman and the only Birkman Learning Partner in the United Kingdom. We have used it, since our founding, to deliver the very best staff development across a variety of professions.

What We Do

We coordinate a large team of human development professionals with corporate backgrounds and a wide range of specialist skills.

Birkman Method

To get the best out of people you need the best assessment tool.


Become a registered Birkman consultant or top-up your talents.

Latest News

Up-to-date news on The Birkman Method and our upcoming events.

What Makes Birkman Different?

There are many good, well-designed and useful profilling tools available – so why should you choose Birkman?

Using The Birkman Method

A Birkman report provides a view of the individual through four windows – or perspectives

Birkman Workshops

Birkman certification training. Often people specialising in human resources, organisational development, coaching, training, and other fields.