Artistic director, Donmar Warehouse, 1983-89; director and producer, Intelligent Finance Comedy Awards (formerly the Perrier Awards), the UK's leading live comedy awards, 1984 to the present day; production director of Really Useful Theatres, 1993-2005; owner and chief executive of Nimax Theatres Ltd, from 2005.

In 2001 her productions won four Evening Standard Awards: Medea, starring Fiona Shaw directed by Deborah Warner, won Best Actress and Best Director (Queen's and Broadway), Feelgood by Alistair Beaton, a play Nica commissioned, won Best Comedy (Garrick), and Kiss Me, Kate won Best Musical (Victoria Palace). Other productions include: Dawn French in My Brilliant Divorce (Apollo, 2004), Sitting Pretty by Amy Rosenthal (tour, 2005), Christian Slater in One Flew Over the Cuckoo's Nest (Gielgud, 2004), David Suchet in Man and Boy (Duchess, 2005), Who's the Daddy? by Toby Young and Lloyd Evans (King's Head, 2005) and David Schwimmer in Some Girl(s) by Neil LaBute (Gielgud, 2005).

In 2006: Who's Afraid of Virginia Woolf? (Apollo), the reprise of One Flew Over the Cuckoo's Nest starring Christian Slater and Alex Kingston (Garrick), Breakfast with Mugabe by Fraser Grace directed by Anthony Sher (Duchess), Fool for Love by Sam Shepard starring Juliette Lewis (Apollo) and See How They Run (Duchess).

In 2007: A Moon for the Misbegotten starring Kevin Spacey (Old Vic and Broadway) and Swimming with Sharks starring Christian Slater (Vaudeville). In 2008: The Deep Blue Sea starring Greta Scacchi (Vaudeville).

In September 2005, Nica bought four of London's most beautiful playhouses, the Lyric, Apollo, Garrick and Duchess Theatres, from Andrew Lloyd Webber with her business partner Max Weitzenhoffer, forming Nimax Theatres Ltd which she runs as chief executive.