I have only used interparcel with UPS but the collection & delivery service has always been excellent with no issues, and online customer help was always efficient in helping resolve my queries. The only minus is that interparcel does not seem to provide an option to connect - or interface with - customer's eBay accounts (which other companies like parcel2go do offer, so I have sometimes used parcel2go instead as it's that much more convenient and I still get good service, also eBay tracking details are populated automatically. With most deliveries now being eBay based, I think Interparcel need to hire an IT guru URGENTLY to add this eBay-linking feature to the interparcel website, otherwise the competition is going to take their customers.