VFD, understanding what drove the pilots to fly in the way that they did may be the key to understanding this accident.
Also, ultimately I feel those responsible for managing the airspace must take some responsibility for what happens within that airspace - that is after all the final line of defence against slipshod operators & lax regulation.
The current UK ATC practice of informing the pilot that he will be reported if he continues an approach which the controller suspects will infringe the law would likely have prevented this. Perhaps we could take this a stage further, and give ATC the authority to refuse a clearance in such circumstances, unless the crew first declares an emergency?
I appreciate controllers cannot be expected to know the LV capabilities of every aircraft/operator & crew combination, but the approach to the Cat 1 RWY35 was clearly illegal for any non-emergency traffic, given the measured RVR.