Port Forwarding

D-Link router on version 1.11 was fine, since it updated to 2.04 port forwarding has stopped working.

UPNP is working, is sky phasing out port forwarding in favor of UPNP?

I have the exact same issue since my Sky D link router got upgraded to the 2.04 firmware. I'll be watching this post closely to see if there is anyway to resolve this issue.
I highly doubt sky are removing port forwarding in favor of upnp because there are thousands of programs and older hardware that doesn't support upnp.
I think this is somekind of glitch in the new 2.04 firmware.

I deleted all the firewall services and rules, reset the router, added them back and now its working again.

Yeah, update glitch it seems, let me know if that works for you.