Just been out for a real good look at the abs sensor and cage.
with the wheel off and rotating the brake disk (which is only
help on by the wheel and a small
guide pin, might i add) the cage doesn't touch the abs sensor.
If i fit the wheel back on, tighten the bolts and then spin the wheel. It spins quite freely and doesn't get harder to rotate as it turns.
It got dark before i could check the other side, but i was sure the passenger side was where the noise was coming from. I've been wrong before so will check the other side tomorrow.
I'm going to take it to my mechanic for him to take a look on friday all being well!