Nicholas trained at LAMDA.

Theatre credits include Amadeus at the National Theatre. King John, The Whip, Richard II, Henry IV Parts 1 and 2, Henry V, The Two Gentlemen of Verona at the RSC. Gruesome Playground Injuries at the South London Theatre. June at the Park Theatre. Cometh the Minuteman at the Old Red Lion.

Film includes The Theory of Everything, Dirty Work, Red Light, and The Ringer.