Throttle Cable Replacement

Throttle stuck wide open at Elvington at the w.e.

Immediately thought stuck throttle bodies but noticed that throttle cable is frayed at the business end, so reckon this is the prob (stuck twice on the way home too)

Q. Anyone got any tips for cable replacement,? is it simpler just to put in an inner cable or inner and outer? or is it a trained snake jobbie…

Cheers