Bryan Ferry's 24-year-old son was thrown in a police cell after a raucous night at a BAFTAS after-show party. OTIS FERRY was cautioned by police after on Sunday night (11FEB07) after throwing a photographer's keys into the gutter outside London nightspot Boujis, which he was leaving with actress pal Sienna Miller. Miller has been romantically linked to Otis' brother ISAAC, with the pair spotted canoodling throughout the night. It's not the first time Otis Ferry has had a brush with the law - he narrowly escaped a driving ban at a court hearing last month (JAN07) and stormed London's Houses of Parliament in 2004 in protest over anti-hunting legislation.