Imagine a Maasai warrior, or a Maasai woman adorned with beads - it's one of the most powerful images of tribal Africa. Dozens of companies use it to sell products - but Maasai elders are now considering seeking protection for their "brand".

Dressed in smart white checked shirt and grey sweater, you'd hardly know Isaac ole Tialolo is Maasai.

The large round holes in his ears - where his jewellery sometimes sits - might be a clue, though.

Isaac is a Maasai leader and elder. Back home in the mountains near Naivasha, in southern Kenya, he lives a semi-nomadic life, herding sheep, goats, and - most importantly - cattle.

But Isaac is also chair of a new organisation, the Maasai Intellectual Property Initiative, and it's a project that's beginning to take him around the world - including, most recently, London.... READ MORE