Hi all,
After struggling with this for 2 days i finally sorted the connection issue. I got my solution from this forum with a little tweek which hopefully will help others.
I first connected to my desired wifi network via dhcp (this is the default settings to anyone who doesnt know). I allowed the phone to connect then changed it to static IP by clicking on the saved wifi link and choosing advance settings. The fields should atuomatically fill with the IP, DNS and default gateway etc.
I left these settings as they were accept for the DNS primary and secondary address. Here i changed both to 8.8.8.8 for primary and 8.8.4.4 for secondary.
If you Google these addresses you'll find they are Googles own DNS servers and can be used in place of the default DNS entries. Hit save and lauch your browser, if you have any luck like i did you'll connect straight away.
This work around leaves me to believe that the problem isnt with the router or firmare but the DNS servers in my company.
Hope this helps. GOOD LUCK!