The One Show will air a special edition tomorrow night ahead of the grand final of the Eurovision Song Contest.
The one-off Saturday show will be hosted by Alex Jones and Rylan Clark live from outside the M&S Arena in Liverpool, host venue for the event.
Together with Scott Mills, Clark will be commentating Radio 2's coverage of the final and will therefore have to leave halfway through the pre-show "in spectacular fashion".
Former UK Eurovision representatives Cheryl Baker, Sonia and Sandie Shaw are among the special guests on the programme, while Mel Giedroyc will provide live updates from inside the arena.
The show also has exclusive access to this year's UK entrant, Mae Muller, following her journey to the final over the last few months.
The One Show: Eurovision Special airs Saturday at 7.30pm on BBC One.
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