A cipher whose key is the speaker’s name. Who is it and what do they say?

PWK DOXBL  DOQWNB  KX  ULBD  YTLPBL  VL

DOPD  ULMPTT  YALYXBDLAXEBTI

The JCC July Champions are: Mia Toal, Anira Edgson, Rocio McGillivray, Morgan Williams, Jacob Moon, Sidney Clews, Holly Rinaldi, Harry Darbyshire, Tom Exley, Gesa Graffar, Holly Kellett, Lewis Varey, Will Parker, Zain Dar, Oliver Carr, Michael Aspinall, Abigail Fung, Georgie Cavanagh, Joe Bracegirdle, Emma Redford, Emma Hill and Raffi Day, who all solved this substitution cipher impressively quickly.