Complex sentence: After screen testing for but deciding against presenting "Flog It!" for the BBC in favour of his business, Hogben's style made him a choice for his own show, which was created in the BBC series "Auction Man".
Split into simpler sentences: After screen testing for "Flog It!" for the BBC, Hogben decided against presenting in favour of his business. His style made him a choice for his own show, which was created with the BBC series "Auction Man".