Which "The A–Z of Mrs P" actress was also on a sitcom that aired on Channel 4?
The A–Z of Mrs P: The A–Z of Mrs P is a musical conceived by Neil Marcus and written by British playwright Diane Samuels and British composer Gwyneth Herbert. The A–Z of Mrs P:  It opened in London at Southwark Playhouse on 21 February 2014, starring "Peep Show" actress Isy Suttie and Frances Ruffelle. Peep Show (TV series): Peep Show is a British sitcom starring David Mitchell and Robert Webb. Peep Show (TV series):  It was broadcast on Channel 4 from 2003 until 2015.
Isy Suttie