Career
After university, in 1993 he co-founded a drama collective with fellow students Graham Eatough and Nick Powell called Suspect Culture, based in Glasgow. Their work was highly influenced by European theatre. Greig would go on to write the texts for almost all of their shows until 2004, including Timeless (1997), Mainstream (1999), Candide 2000 (2000), Casanova (2001), Lament (2002), and 8000m (2004).
His stand-alone plays, from Stalinland (1992), began to be picked up by major theatres; the Traverse produced Europe (1995), The Architect (1996, made into a film of the same title in 2006), Outlying Islands (2002), Damascus (2007) and Midsummer (a play with songs by Gordon McIntyre, 2008). Paines Plough produced The Cosmonaut's Last Message To The Woman He Once Loved In The Former Soviet Union (1999) and Pyrenees (2005). The RSC commissioned and produced Victoria (2000) and The American Pilot (2005). His sequel to Macbeth, Dunsinane (2010) was premiered at the Hampstead Theatre by the Royal Shakespeare Company. The Speculator (1999) and San Diego (2003) were commissioned by the Edinburgh International Festival. When the National Theatre of Scotland was formed in 2006, Greig served as its first Dramaturg and also wrote an adaptation of Euripides' The Bacchae for them. His adaptation of Alasdair Gray's novel Lanark opened at the Lyceum Theatre as part of the Edinburgh International Festival in 2015. In 2006, he joined the board of the Traverse Theatre.
Greig produced around 50 plays, texts, adaptations, translations, and libretti in the first two decades of his career. Dr Korczak's Example (2004) is a play for young people and Danny 306 + Me 4 Ever (1999) is for puppets. He has produced adaptations of Tintin in Tibet (2005) for the Barbican, London, and Charlie and the Chocolate Factory (2013) for the Theatre Royal, Drury Lane. The Strange Undoing of Prudencia Hart (2011) for the National Theatre of Scotland was designed to be toured to and performed in pubs; partnering with Punchdrunk, it played an extended run from November 2016 to April 2017 at the Heath restaurant in the McKittrick Hotel, home of the similarly immersive theatrical experience Sleep No More in New York City. He has provided English-language versions of foreign plays, including Camus's Caligula (2003), and Strindberg's Creditors (2008). In 2013, he wrote The Events, in which different local choirs perform the musical numbers every night. Lyn Gardner, in The Guardian, chose this as her best piece of theatre in 2013. With local politician Sarah Beattie-Smith of the Scottish Green Party, Greig curated the political discussion show Two Minute Manifesto which toured Scotland in 2015. In 2018 it was announced that he would adapt the classic film Local Hero for the stage, with music by Mark Knopfler. The production opened at Edinburgh's Royal Lyceum Theatre in March 2019. Its 2020 transfer to the Old Vic in London was postponed due to the COVID-19 pandemic in the UK.
Greig took over from Mark Thomson as artistic director of Edinburgh's Royal Lyceum Theatre in 2016. He stepped down at the end of the 2024/2025 season, and was succeeded by James Brining in April 2025. He adapted Aeschylus' The Suppliant Women for the Lyceum in October 2016. The 2019 opening of Greig's first original new play in six years, Adventures With The Painted People, at the Pitlochry Festival Theatre was cancelled due to the COVID-19 pandemic. The play was subsequently adapted for radio and later staged at Pitlochry Festival Theatre in 2021.