There are/once were at least two bands called The Hamsters:
These are photos from concerts where The Hamsters played, so they may be of other bands that played the concert as well.
The Hamsters Nov 11, 2010 Norwich, England, United Kingdom Uploaded by Jason French
Guilfest 2009 Jul 10 - 12, 2009 Guildford, England, United Kingdom Uploaded by Craig Hatfield
Cropredy Festival Aug 11 - 13, 2005 Cropredy, England, United Kingdom Uploaded by Mr.Bassman
The Alarm
Guilfest Jul 16 - 18, 2004 Guildford, England, United Kingdom Uploaded by Craig Hatfield
TICKET STUBB
The Blues Band / The Hamsters / Nine Below Zero / Eddie & The Hot Rods Aug 27, 2000 Lincoln, England, United Kingdom Uploaded by Jim Jones