Siân Williams is a founder of The Kosh dance theatre company.

Choreography/Movement Direction includes: The Fir Tree, King Lear (2022), Twelfth Night, The Comedy of Errors, Pericles (2019 tour), Henry IV Parts 1 and 2, Henry V (2019), After Edward, Twelfth Night, The Merchant of Venice, The Taming of the Shrew (2018 tour), Hamlet and As You Like It at Shakespeare’s Globe; Cymbeline, Richard III, Troilus and Cressida, A Midsummer Night’s Dream, Wolf Hall, Bring Up the Bodies and The Mouse and His Child for the RSC; London’s Turbulent Son for The Becket Pageant for London; Take the Rubbish Out Sasha at the Finborough; A Christmas Carol at Theatr Clwyd; Tic Toc for Parama 2; Orfeo Ed Eurydice (also as performer) for Purefeo Opera; Keith? at the Arcola; The Messiah on tour with Birmingham Rep; Labour of Love for the Michael Grandage Company and Headlong; Beauty and the Beast, Sense and Sensibility, The Secret Garden, As You Like It and Handbagged at Theatre by the Lake; Room at Theatre Royal Stratford East; Powerplay at Hampton Court; Dedication at the Nuffield, Southampton; Pride and Prejudice at Regent’s Park Open Air Theatre; The Night Watch at the Royal Exchange Manchester; Singin’ in the Rain for Octagon Theatre, Salisbury Playhouse and the New Vic; I am Thomas for Told By An Idiot and National Theatre Scotland, and Kate Bush’s Before the Dawn concerts at the Hammersmith Apollo.

As a performer: All The Kosh productions; Animal Crackers in the West End; La Traviata for Opera North; The Tempest, The Storm, A Midsummer Night’s Dream and Timon of Athens at the Globe; and Twelfth Night and Odyssey at The Factory.