Robin or small bird Nester (Unused As New in box) (Southfields SW19)

I have an Unused (in box as new) Robin (or small bird) Nester I’m giving away for free, it’s 25cm long and 12.5 cm deep and 14cm high, it has a long wire at the back to either place it in a tree and wrap the wire around the branches OR screw 2 screws in to your fence and wrap the wire around the screws so the nester doesn’t hall or get blown off by the wind. I live just up the hill from Southfields tube station.