BP has announced changes to the external roles of its newly appointed chairman, Ian Tyler. Following his appointment, Tyler will step down as chairman of Grafton Group and resign from his position as senior independent director at Anglo American. Despite relinquishing these roles, he will remain on Anglo American’s board as an independent non-executive director and will continue to serve as chair of the miner's remuneration committee. Tyler will also maintain his involvement in other existing committee responsibilities at Anglo American. The company previously indicated that Tyler would reassess his external commitments in light of the demands associated with his leadership position at BP.