Update: got it working.
If anyone is suffering from issues with VLANS , cable modems and pfSense read on, it might help.
Seems the issue might have been due to my switch MAC add being utilized first instead of my firewall box at the ISP end, due to using VLANS?
Anyway - to correct this - I attached my firewall box directly to the cable modem and did a system reset and obtained a WAN directly.
I then setup my WAN VLAN in the gui and switched to it - obviously making sure all cables were put into their correct VLAN port… (For some reason I couldn't get this to work via the console?)
I am a happy man for now....