Samantha is STEM communicator & mathematican based at the Royal Institution, coordinating the Ri's Secondary Mathematics Masterclass programme across the UK.
Kevin is a mathematician in the School of Mathematics at the University of Leeds, and is currently the Education Secretary of the London Mathematical Society.
Matthew is a postdoctoral researcher at the University of Cambridge and one of the editors of Chalkdust Magazine.
Ben is a mathematician, musician, and public speaker. He gives maths talks and workshops around the world, to students, teachers, and the general public.
Katie is a mathematician based in Manchester, who talks about mathematics at universities, schools events, festivals, on BBC radio and TV, in books and on the internet.