Peter Day visits a very unconventional business in the Basque country of Northern Spain. What can other businesses learn from the world's biggest worker cooperative in Mondragon?

There are not many ways to run a company but one group has been organising itself in a very successful alternative way for decades.

It is the Mondragon Group, the world's largest worker cooperative.

It is based in a small city of the same name in the Basque region of Northern Spain and is owned by 70,000 of its workers.

With an eye towards globalisation and innovation, Mondragon is a collection of 256 separate companies in 18 different countries.

Peter Day went to this hive of cooperative expertise to find out what makes this special company really work.