[3][4] He played Richard III at the Riverside Studios (2010) and originated the part of Lawrence in Tim Firth's stage adaptation of Calendar Girls.
Prekopp has appeared in BBC Radio 4 adaptations of Terry Pratchett's Mort (as the title character), Small Gods (as Brutha) and Night Watch (as young Sam Vimes).
He directed the Afternoon Play Taken by Suzanne Heathcote for BBC Radio 4,[5] and is a singer/songwriter and founding member of folk/rock band The Fircones featuring The Likely Lads actress Brigit Forsyth on cello.
He has also appeared in Law & Order: UK, Lewis, No Offence, Call the Midwife and Hard Sun.
In 2015–16, Prekopp portrayed William III of England and Daniel Defoe in the Royal Shakespeare Company's production of Helen Edmundson's Queen Anne.