Hmmm, a slightly skew-whiff way of looking at this is £36 for getting the car home and a replacement alternator isn't too bad.
However, it's still an unwanted expense but at least you got it sorted with minimum fuss Jim.
PS - i've not forgotten your resistor, i had a tidy up recently and just can't find the resistors at the moment! Been hectic just lately and haven't had a chance to mount an in-depth search!
