Hi,
Just to update. The problem is now solved.
It was done by creating a file in the /etc/modprobe.d directory which allows modprobe configuration for each module.
The files contents were
options lirc_serial irq=4 io=0x3f8
install lirc_serial /bin/setserial /dev/ttyS0 uart none ;\
/sbin/modprobe --ignore-install lirc_serial
Hope this helps someone else out.
Regards
Darren