Berlyn's stage appearances include: Doctor Caius in "The Merry Wives of Windsor" with Oscar Asche at the Haymarket Theatre (1929); in "Henry V", "Julius Caesar" and "The Merchant of Venice" at the Alhambra Theatre in London (1933-1934); Norman in "100 Not Out" at the Queen’s Theatre, London (1930); Weird Sister in "Macbeth" at the Prince’s Theatre, London (1926-1927); in "The Banana Girl" at the Prince of Wales Theatre, London (1925); Monty Gordon in "Camille States Her Case" at the Globe Theatre (1925); Krashoff in "The Dare-Devil" at the Strand Theatre (1924); Ichneumon Fly, Inventor in the British premiere of "The Insect Play" at the Regent Theatre, London (1922-1923); Destiny in "The Betrothal" at the Gaiety Theatre (1921); Humphrey in "The Knight of the Burning Pestle" at the Kingsway Theatre (1920) with Noël Coward and Roger Livesey; in "Double Dutch" at the Apollo Theatre on Shaftesbury Avenue (1916-1917); Signor Berchili in "The Dancing Mistress" starring Gertie Millar and with music by Lionel Monckton at the Adelphi Theatre, London (1912); Sambaroff in "The Great Young Man", a comedy by Prince Vladimir Vladimirovich Baryatinsky (revised version of his "The Career of Nablotsky") at the Kingsway Theatre in London (1911); Sambaroff in "The Career of Nablotsky" by Prince V. V. Baryatinsky at the Royalty Theatre (1910-1911); Yepikhodov in "The Cherry Orchard" at the Aldwych Theatre, London (1910-1911); in "Links" at the Scala Theatre, London (1907-1908); in "Véronique" at the Prince’s Theatre in Bristol (1905-1906), and Fagin in "Oliver Twist" at the Grand Theatre in Islington (1903).