Complex sentence: This is also the first series to be sponsored by Just Eat, with the show having being sponsored by TalkTalk since 2009, as well as the second time the show has premiered in September, rather than August, since the first series in 2004.
Split into simpler sentences: This is also the first series to be sponsored by Just Eat, with the show having being sponsored by TalkTalk since 2009. As well as the second time the show has premiered in September, rather than August, since the first series in 2004.