guys need some pointers

under breaking i am getting a nasty sounding scoring noise comimg from the drivers side wheel.

the disks are fine no marks on them and they are new pads only a matter of weeks old.

what could it be i was thinking maybe a wheel bearing as ther is some vibration through the wheel under higher speed breaking, and it feels a bit lumpy if that makes sense as if the wheel is egg shaped.

need some advice before i put it into a garage and pay over the odds on labour charges

thanks

steve