From the sea over 100 miles away, the UK and America lobbed cruise missiles at Gadafi installations, most especially his air defense ones. After all, if you are going to send up French and American planes to enforce the no-fly zone you first have to take out the military capability of Gadafi to fire upon them.
While America claims to only be part of the operation it is clear we are the majority of it during the first few days of establishing air superiority over Libya. Of the 136 cruise missles launched, only eight were from the UK, the rest were American.
There were over 30 air strikes, again, mostly by Americans. I don't know why France was not the lead here since Gadafi is their Problem Child they enabled for four decades. They should be the ones to deal with him.