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.
Grosvenor is featured along with Spooky Tooth" in the 1970 documentary Groupies.