As Tony and Siegrid, the pair released two singles; the first, "Long Hair," was a regional hit in New York in 1966, but they could not maintain its success.

Through this position, in 1968, he met British producer Denny Cordell, who asked him to assist in recordings for successful jazz vocalist Georgie Fame, prompting Visconti to move to London.

This began a relationship with T. Rex that would last for their next eight albums and eleven UK Top Ten singles in a row, commencing with "Ride a White Swan" (1970).

He produced several tracks for the Iveys' first LP, Maybe Tomorrow (1969), and Magic Christian Music (1970), released on the Beatles' Apple label.

Shortly afterwards, Visconti began to work again with Bowie and, along with guitarist Mick Ronson and drummer John Cambridge, formed and toured with the band The Hype, in which he played bass.

Although the band name would be very short-lived, most of the line-up persisted and—with Woody Woodmansey replacing Cambridge—would go on to record Bowie's album and single The Man Who Sold the World in 1970.

In 1990 he produced several tracks on the Moody Blues' Keys of the Kingdom album (1991), Luscious Jackson's Electric Honey, Leisure Noise by Gay Dad, Soul Caddy for Cherry Poppin' Daddies, and Dawn of Ananda for Annie Haslam.

In 1997, Visconti produced the debut album of The Stone Roses member John Squire's new band, The Seahorses, entitled Do It Yourself.

In 2003 he teamed up with the Finn Brothers (Neil and Tim of Crowded House and Split Enz) to record and produce their second collaborative album, eventually released in 2004.

His autobiography, Bowie, Bolan and The Brooklyn Boy, co-written with Richard Havers,[10] was published in February 2007 by HarperCollins UK.

The book has been translated into French by Jérôme Soligny as Bowie, Bolan et le Gamin de Brooklyn, published by Tournon.

In 2019 Visconti produced the song "The Dragon Cries" with Band-Maid vocalists Miku Kobato and Saiki Atsumi.

[20] Since 2015 he has toured the UK, Japan, and the US with the Bowie cover band Holy Holy, playing the album in its entirety and other early Bowie classics, along with the album's original drummer Mick Woodmansey and other well-known musicians, including singer Glenn Gregory and guitarist James Stevenson.