I think this information may be helpful for those on business travel to China via Hong Kong International Airport.
Two companies are authorized to provide direct limousine service from Hong Kong Airport to main cities in Guangdong Province. You can hire a 6-seater limousine at the Airport from these companies (both located at Buffer Hall A), but to be on the safe side, advance online booking is advisable.
Just to give you some idea of the cost. Trans Island, one of the service providers, charges HK$2500 (about US$320) for a trip to Shenzhen Airport. A Chauffeur speaking English will be provided.
Please check out Trans Island’s website for more information and reservation.
Another service provider is Eternal East. Unfortunately its website is in Chinese only.
But here are the ways to make enquiries and online booking of the cross border limousine service:
Phone: (852) 2261-2636
Phone: (852) 2261-0176