Keeley guest starred as Rosie Kennedy in the final episodes (Christmas 2006/New Years 2007) episodes of The Vicar of Dibley. I'm just embedding the sections of the episodes Keeley appears in. If you want to see the rest you can search for "vicar of dibley christmas" on You Tube. Dawn French plays the vicar and Richard Armitage plays Harry.
Many thanks to You Tube user iluvtelly who uploaded the episodes.