1987 saw Anthony Warlow return to The Australian Opera after success in Guys and Dolls and his one man show A Song to Sing O (a theatrical biography of George Grossmith, the creator of W.S. Gilbert & Arthur Sullivan's comic baritone roles and the author of the classic Diary of a Nobody) for a season of Emmerich Kalman's Countess Maritza as well as his signing to play the role of Enjolras in the Australian production of Les Miserables directed by Trevor Nunn. Anthony's performance is featured on the Grammy Award winning International Cast Recording of the production.

In 1990 Anthony Warlow was chosen by director Hal Prince and producer Cameron Mackintosh to play the role of the Phantom in Sir Andrew Lloyd Webber's The Phantom of the Opera. His portrayal of the role was regarded as one of the finest in the world and earned him several industry awards (MOs). In 1991 he was the recipient of the prestigious 'Advance Australia' award for contribution to Music Theatre.

The following years saw Anthony battle Lymphoma, record successful albums and receive a myriad of industry awards, as well as perform in his national sell-out tour Back in the Swing.

In 1993 Anthony Warlow was asked to play the role of Henry Higgins in the Victoria State Opera's production of My Fair Lady, a sellout season for the company and a role he has enjoyed performing in several seasons around the country.

Anthony made a long awaited return to The Australian Opera in 1995, playing the role of Archibald Grosvenor in their acclaimed production of Gilbert & Sullivan's operetta Patience. Later that year he went on to star in the multi-award winning musical The Secret Garden as Archibald Craven.

In July 1996 Anthony released The Best of Act One, a compilation of his recordings to date which achieved platinum status.

From July to September 1996, Anthony performed with Sarah Brightman in The Music of Andrew Lloyd Webber throughout Australia, New Zealand, Singapore and Hong Kong. This was followed by his debut solo tour of Japan.

1997 saw Anthony's return to the role of Henry Higgins at Sydney's Capitol Theatre as well as the newly formed Opera Australia reviving his role of Eisenstein in a new production of Strauss's Die Fledermaus, his performance once again receiving critical acclaim. His performances in both Die Fledermaus and Patience have been recorded by Opera Australia for video release.

In 1998 Anthony Warlow was honoured by the nation and the National Trust, being elected Living National Treasure. In 1998, he starred in the smash hit Australian tour of Grease - The Arena Spectacular, receiving critical acclaim for his portrayal of Teen Angel. Anthony Warlow recorded his two show-stopping hits from Grease on his own label, Skylark Records, with the proceeds of the CD being donated to The Sydney Cancer Centre and The Heart Research Institute.

Later in the year, Anthony joined Olivia Newton-John and John Farnham in The Main Event, which outsold all international acts in Australia in 1998. The Main Event produced a #1 album Highlights from The Main Event,now multi platinum. To follow on from the huge success and appeal of the CD, a television special was produced for the Seven Network and an extended version for release on video.

In November 1999, Anthony returned to the Opera as Papageno in Opera Australia's Melbourne season of The Magic Flute, which was a huge success.

In 2000/2001 Anthony Warlow starred as Daddy Warbucks in the hit musical Annie. A new song, Why Should I Change a Thing, was written for him creating Music Theatre history and changing Annie forever.

In June/July of that year Anthony Warlow was reunited with Olivia Newton-John and John Farnham for two one-off shows of The Main Event in Mount Isa and Darwin.

2002 saw Anthony performing the dual roles of Cervantes & Don Quixote to critical acclaim in the Australian production of Man of La Mancha.