All sorted guys.
All what I was trying just didn't work but this did.
Open /lib/modprobe.d/aliases.conf
Add the lines
options snd_usb_audio index=0
options snd_bcm2835 index=1
options snd slots=snd_usb_audio,snd_bcm2835
Ctl + X and it did save.
Thanks all for the help.