If it's what you wanted, you should have been given it, but I can understand why they wouldn't put vents 'as standard' in an exterior upvc door.
Because these doors are self-insulated, they don't get lots of condensation running down them, hence no need for a vent.
What is it about the utility room that's causing mildew? is it unvented? if so, can it be vented for your own comfort, eg with an extractor fan?
I've a feeling current building regs stipulate this, although they are applied retrospectively.