He also appears regularly as Bra's Jeff in Donald McLeary and Sanjeev Kohli's Sony Award winning BBC Radio 4 sitcom Fags, Mags and Bags.
In 2001, his play for BBC Radio 4, There Are Such Things, about the life and career of horror movie legend, Bela Lugosi, won the Hamilton Deane Award for best dramatic presentation from the Dracula Society.
In 2009, McNicoll starred along with Gordon Kennedy Colin McCredie and Sara Crowe in Tim Firth's comedy musical The Corstorphine Road Nativity at The Festival Theatre.
In 2011, he played Toby Belch in Twelfth Night and in 2012, David O. Selznick in Moonlight and Magnolias in two hugely successful productions directed by Rachel O'Riordan in her debut season at Perth Theatre.
In July 2012, he could be heard as Pa Joad opposite Michelle Fairley in a three part Radio 4 Classic Serial adaptation of John Steinbeck's The Grapes of Wrath.
He starred as Jean at the Royal Lyceum in Murat Daltaban's DOT theatre company's acclaimed production of Zinnie Harris' adaptation of Ionesco's Rhinoceros as part of the Edinburgh International Festival in 2017.