Complex sentence: In 2004, he joined BAA and in 2005 became Chairman and Managing Director of Gatwick Airport Limited and, in 2007, he was appointed by HH Sheik Ahmed Bin Saeed Al Maktoum as the first Chief Executive Officer of the newly-formed Dubai Airports Corporation.
Split into simpler sentences: In 2004, he joined BAA and in 2005 became Chairman and Managing Director of Gatwick Airport Limited. In 2007 he was appointed by Sheik Ahmed bin Saeed Al Maktoum as the first Chief Executive Officer of the newly-formed Dubai Airports Corporation.