Back door handle on a renault kangoo?

Hi, I have a v reg renault kangoo and as I shut the back door, the whole handle literally pinged off!
I managed to hold the handle on and locked it from there, but obviously need it fix it as I dont want to have to do this every time.
Any ideas as to what I am going to need, will I need Just a handle ot is it going to need a new lock as well, any ideas as to how much this is going to cost me?