Originally Posted by
Musket90
if 08 ILS is to be replaced by a Cat III system then they'd need to upgrade the approach and runway lights to Cat III which is very costly, so the replacement ILS is likely to be Cat I.
I suppose the old 08 ILS is tired or unreliable. You don't really need both ends to be Cat III as there is usually little wind when it is foggy, except in the Channel Islands.