Hi Jet Jockey A4,
Would some operators use the DA of 608' for a call and not use the radio altimeter in this case because of the uneven terrain?
Mikehotel152 is correct.
If you look at Manchester RW 05L, there are no Cat II limits published (because of uneven terrain under the aircraft at around 100 feet agl).
You can't use a baro altimeter DA (not accurate enough), and you can't read a radio DH as you fly over the river Bollin valley. So you can only do a CAT I or CAT III approach to RW 05L.