More than 100 refugee advocates gathered outside a Brisbane immigration detention centre yesterday to protest Australia's asylum seeker policy and the indefinite detention of several detainees.

Protesters marched around the perimeter of the Brisbane Immigration Transit Accommodation (BITA) Centre at Pinkenba, where about 35 detainees have been housed.

Today marks eight years since the federal government changed its asylum seeker policy to disallow anyone who arrived by boat from being settled in Australia.