If you just have a loose hub Jez, you might need to lace it into a rim to get enough effort into it, to remove the freewheel.
Having said that you would have a load of cut spokes left in the hub if the freewheel hasn't been removed...
It's an entire wheel on a M231cd - I have actually loosened the bearings which had siezed due to bad storage, and they turn nicely now but definitely could do with two new bearing races popped in.