This open air show was part of the Carnival festivities that took place in this small town (in Surrey). The Cure was part of a "Mod Revival" bill. Later, this would inspire Robert Smith the idea and lyrics for Jumping Someone Else's Train.
On the show itself, Fire In Cairo was dedicated "to God" (probably the joy of being in love and a bit of the usual irony). And Meathook was for Porl Thompson (certainly in rememberance of the Easy Cure days).