The office design aims to increase colleague collaboration, with managers not given separate offices and different levels connected by a staircase of yellow Lego bricks.
There are the occasional small rooms which offer staff complete privacy and circular 'study caves' carved into the wall to offer designers a place to rest too.
Jørgen Vig Knudstorp, CEO and President of the LEGO Group, said of the office: "It is our strategy to bring creative LEGO play experiences to children in every country in the world.
“To do that we need to be present globally, attract talented employees in many locations and offer exciting career opportunities that engage and develop our employees, and our main offices - including our new office in London - support us in doing exactly this.
“We have introduced an entirely new way of working in this office, which encourages collaboration and chance encounters that can spark new ideas and opportunities.”
His colleague Bali Padda added: “The lack of fixed seating is a very tangible consequence but the biggest impact is that the traditional, physical concept of ‘a department’ has been dissolved and that we enable cross-organisational collaboration even more than we are used to.”