Complex sentence: In June 2010, she replaced Katie Derham as a presenter of "London Tonight", initially alongside Donal MacIntyre, however on 1 November 2010 she became the sole presenter.
Split into simpler sentences: In June 2010, she replaced Katie Derham as a presenter of "London Tonight", initially alongside Donal MacIntyre. However, on 1 November 2010 she became the sole presenter.