Complex sentence: He first presented the show with co-host Zezi Ifore, though she was sacked halfway through the series, leaving Lamb the sole presenter; for the final series of BBLB in 2010, Emma Willis joined Lamb as co-presenter.
Split into simpler sentences: He first presented the show with co-host Zezi Ifore, though she was sacked halfway through the series, leaving Lamb the sole presenter. For the final series of BBLB in 2010, Emma Willis joined Lamb as co-presenter.