From left to right:

• 604 / HM 1528
  Chassis: Volvo Olympian
  Body: Plaxton
  Owner: Citybus

• 2800
  Chassis: K94UB6X2/4
  Body: Volgren CR224LD
  Owner: Citybus

• 1041 / HP 9730
  Chassis: Volvo Olympian
  Body: Alexander
  Owner: Citybus

• ex-1327
  Chassis: Volvo B6LE
  Body: Plaxton Pointer
  Owner: Citybus