Complex sentence: In September 2015, Kellogg's removed Froot Loops from the UK market due to a lack of demand for the cereal, although in 2017, a special Unicorn Froot Loops limited edition was released in the UK.
Split into simpler sentences: In September 2015, Kellogg's removed Froot Loops from the UK market due to a lack of demand for the cereal. Though in 2017, a special limited Unicorn Froot Loops edition was released in the UK.