For contractual reasons, he changed his name to Ariel Bender at the suggestion of singer-songwriter Lynsey De Paul for his stint with the band. According to Ian Hunter, interviewed in the documentary Ballad of Mott the Hoople, the band were in Germany with Lynsey De Paul for a TV show when Mick Ralphs walked down a street bending a succession of car aerials in frustration. De Paul came out with the phrase "aerial bender" which Hunter later suggested to Grosvenor as a stage name.
The years with Spooky Tooth (1967 to 1970), Stealers Wheel (1973) and Mott the Hoople (1973 to 1974) were the most successful years in his musical career.
In the 1990s, Grosvenor returned in a Spooky Tooth reunion. In 2005, he revived his pseudonym, forming the Ariel Bender Band. In 2007 and 2008 he performed under the name Ariel Bender's Mott The Hoople performing both Spooky Tooth and Mott The Hoople songs, as well as cover songs.
In 2009, he worked with London act, The Winter Olympics, recording guitar parts for their song, "The Great Outdoors", which was released in August 2010.