GSM Web Server does not work


I have recently connected an Arduino GSM Shield to my Uno and have downloaded the example web server code from this link .

When I run this code and open the serial port window it tells me that it is connected to the GPRS network and gets assigned an IP address. However, I am then unable to connect to this site from my web browser and says it times out after a short while.

I am able to send and receive SMS and download web pages provided in the other example codes on the site.

I am using an EE sim and have verified APN log details.

Has anyone come across this type of issue? Would this due to the fact the service provider does not support incoming network connections?

Many thanks.