No. GPF provides you with a complete street address and unique suite number, not a P.O. box.

Sample GPF Address:

Your Name
Unit 1 Finishing House, Peel Street,
Suite UKxxxxxx, GPF-xxxxxxx-UK
Willenhall, West Midlands WV13 2BZ
United Kingdom 

All UK shipping companies will be able to deliver to your GPF (Globalparcelforward) address.