Complex sentence: Willerton is the first UK contestant in thirty years to reach the top ten at Miss Universe, the previous woman to achieve this being Karen Moore, who as Miss England, reached the top five in 1983.
Split into simpler sentences: Willerton is the first UK contestant in thirty years, to reach the top ten at Miss Universe. The previous woman to achieve this being Karen Moore, who as Miss England, reached the top five in 1983.