14 April 1857, at Her Majesty's Theatre, as Fernando in La favorita, with Mlle Spezia and Sig. Vialetti. Giuglini took the London palms, and was immediately approved by the London audience. He joined an already celebrated company which included artists such as Maria Piccolomini, Marietta Alboni and Thérèse Tietjens. This house was in competition with the newly rebuilt Covent Garden theatre, where Giulia Grisi and Mario led the cast and the box-office under Michael Costa for Frederick Gye. La favorita was followed by La traviata with Mlle Piccolomini, and Giuglini was received with even greater excitement than before: and in I puritani, chosen for the debut of Angiolina Ortolani, he stole the laurels from his partner. His Edgardo in Lucia di Lammermoor, with Piccolomini, was a further sensation: As Manrico, opposite Maria Spezia-Aldighieri and with Marietta Alboni as Azucena, he still held the centre of attention. In the revival of Don Giovanni, with Piccolomini (Zerlina), Mlles Spezia (Donna Anna) and Ortolani (Elvira), Belletti (Leporello), 'the music of Don Ottavio was warbled by the beautiful voice of Giuglini as few had heard it warbled before. The noble air "Dalla sua Pace" was restored by Giuglini on this occasion, and he made a marked sensation by his tender, expressive delivery of it.' He took part in an Italian version of Balfe's The Bohemian Girl (as, La Zingara), with Piccolomini, Alboni, Vialetti and Belletti: 'Giuglini's singing of "Then you'll remember me", in the Italian brought with it a pleasure never to be forgotten by those who heard it.' He also gave a 'Festival Performance' of La sonnambula with Mlle Piccolomini and Sig. Belletti. With Mapleson and Smith, 1858–1861 Lumley's 1858 season did not begin until after Easter, and for its launch, when the future was very uncertain, he gave a lavish production for the London debut of Thérèse Tietjens, with Giuglini, in Les Huguenots. Even during rehearsal there was tremendous interest, when Tietjens' artistic efforts called forth a response from her Raoul: Tietjens and Giuglini next sang Il trovatore, and both productions, attended by the Queen and court, had wildly enthusiastic receptions. On 3 June 1858, for Lumley, he appeared as Rodolfo in the first UK performance of Verdi's Luisa Miller, opposite Piccolomini. However, as Lumley's management soon afterwards collapsed, Colonel J.H. Mapleson, hoping to revive Her Majesty's company, set up a company at Drury Lane, acquiring some of Lumley's artistes, and in