Thanks for all the replies. Seems our limits are at the low(more restrictive) end of the pack.
433 mentioned that winds would be necessarily light to get Cat2/3 conditions and I agree with one exception. We go to St. John's, Newfoundland on a regular basis and it is not at all unusual to get Cat2 conditions with winds at 90 degrees and greater than 10knots. My previous aircraft was a B737-200 and limits were 15kts. I can remember at least one occasion when we did a sucessful approach with the max. allowable. I'd hate to have to divert without even trying for what seems to be an unreasonably conservative limit. But there you go I guess...