Think 'bigger picture'
Airlines are currently linking themselves to the same handling agent on worldwide agreements (Where possible) This way they can ensure they have known standards and know who's door to kick down if things fail. And these doors are not your local station manager.
ZB are currently handed by Swissport where present
AF/KL - Worldwide agreement for handling where ever Swissport are present.
Easyjet - Handled by Menzies where present.
BMI - Handled by Aviance where present.
Continental - Servisair..
Its not just down to your local performance, that can be changed...Its all down to £££££ or €€€€