There are at least three bands using the name Gecko:
These are photos from concerts where Gecko played, so they may be of other bands that played the concert as well.
Bestival 2015 Sep 10 - 13, 2015 Downend, Isle of Wight, UK Uploaded by A Badger Faced Man
Bestival 2012 Sep 6 - 9, 2012 Downend, Isle of Wight, UK Uploaded by A Badger Faced Man
Gecko / The Fabulators / Scarper! Nov 11, 1996 Hull, England, United Kingdom Uploaded by Mac (Hull, Uk)