200' cloud ceiling and 550m vis at the limit of CAT l
Therefor that's the approach you should be making. Why do a CAT ll APP op in CAT l conditions.
CAT 1 is in the UK consideres as low vis and therefore should be covered in the Aerodrome Manual and ATC MATS Pt 2.
For a CAT ll approach the localiser sensitive area (LSA) has to be safeguarded out to 150m (I think) though 137 is allowed in UK.
When flying a CAT ll app are you using A/P? What D/H do you use. And, where is this airport?
Sir George Cayley