Can't start the car-KEYS WILL TURN FREELY AND LOOSELY.Lights on even without the keys

[Scudda]

sounds like u have what happened to me. put it simply the black box has broken off the end of the barrel so the key doesnt turn it any more. it is probably stuck on ACC as well which explains your lights being on. I took the shrouding around the column right off and yanked that black box out so it hangs freely. I was lucky enough to have enough of the rotating part extruding from the box so i drilled a hole in it and put a keyring through it so thats how i start it atm. note that u still have to have the key in and turn around so its not immobilised and so the sterring lock doesnt stay on ill get a new ignition barrel when i get the money but it works fine for now