2015 heralds a year of change for 'The X Factor', with a new hosting line-up, a refreshed judging panel and some big format switch-ups, but how is the overhaul working out?
As auditions drew to a close this week, HuffPost UK headed down to Wembley Arena to find out for ourselves, and here's the five most surprising things we learned...
MORE 'X FACTOR':
X Factor Auditions: What We Learned
Nick Grimshaw is the real revelation(01 of05)
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Caroline and Olly bring some much needed fun to proceedings(02 of05)
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The spark between Simon and Cheryl is back(03 of05)
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Louis Walsh seems like a distant memory(04 of05)
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Should they have kept the room auditions?(05 of05)
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'X Factor' 2015 Auditions: London
'X Factor' auditions(01 of34)
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'X Factor' auditions(02 of34)
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'X Factor' auditions(03 of34)
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'X Factor' auditions(04 of34)
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'X Factor' auditions(05 of34)
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'X Factor' auditions(06 of34)
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'X Factor' auditions(07 of34)
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'X Factor' auditions(08 of34)
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'X Factor' auditions(09 of34)
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'X Factor' auditions(10 of34)
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'X Factor' auditions(11 of34)
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'X Factor' auditions(12 of34)
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'X Factor' auditions(13 of34)
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'X Factor' auditions(14 of34)
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'X Factor' auditions(15 of34)
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'X Factor' auditions(16 of34)
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'X Factor' auditions(17 of34)
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'X Factor' auditions(18 of34)
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'X Factor' auditions(19 of34)
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'X Factor' auditions(20 of34)
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'X Factor' auditions(21 of34)
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'X Factor' auditions(22 of34)
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'X Factor' auditions(23 of34)
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'X Factor' auditions(24 of34)
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'X Factor' auditions(25 of34)
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'X Factor' auditions(26 of34)
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'X Factor' auditions(27 of34)
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'X Factor' auditions(28 of34)
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'X Factor' auditions(29 of34)
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'X Factor' auditions(30 of34)
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'X Factor' auditions(31 of34)
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'X Factor' auditions(32 of34)
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'X Factor' auditions(33 of34)
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'X Factor' auditions(34 of34)
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