@stephenw10
Thanks for getting back to me so fast, for some reason on options in the menu worked and all external connectivity was lost.
In the end, I downloaded the pfsense installer from Netgate and did a clean install, which seems to have solved everything and kept my config intact.
Thankfully, all was not lost, bar some pride and some relationship points with the 'misses'.
Problem solved, and all in all a simple enough fix!
Thanks