Emma Willis presents a profile of this year's eight semi-finalists, ahead of the show's imminent return following a lockdown-enforced delay. Emma takes a look back at the performances of these eight contestants over the earlier rounds of this year's show, from their first Blind Audition to their Knockout Performance. Plus, the results of the Lifeline Act public vote, which will see a ninth act chosen by viewers to return to the show. (thetvdb.com)