It's also 'blurred' a bit by allowing 'below Cat 1 minima' operations if the aircraft carries certain equipment (eg HUD) AND it's been approved by the CAA. (I think it's called 'Lower than Cat 1 Minima' approval).
I understand this could allow a multi engined crew to commence a Cat 1 approach when the RVR is only 300m instead of the 'normal' 550m.
I would assume the 'Absolute Minima' procedure/special phraseology has been dropped as ATC would be unaware or rather have no 'need to know' that a particular aircraft is approved for this procedure.