During post-production lead actress Samantha Barks won the role of Éponine in the film version of Les Misérables.
Cat was recently cast as Nancy in the 2011-13 UK tour of Oliver!, in the place of Samantha Barks, who was recently cast as Eponine in the Les Misérables (2012 film).
Cameron Mackintosh then cast Meredith as Eponine in Les Miserables a role she played in both London and Manchester.
She performed in many musicals such as Cats the Musical, Miss Saigon, The Music of Lloyd Webber Concert Tour (understudying Sarah Brightman), Oh What A Night, 25th Annual Putnam County Spelling Bee, as the lead Frugue girl in Sweet Charity, and took the role of Eponine in the 10th Anniversary Australasian Tour of Les Miserables.