ATCO Two
VFR/SVFR criteria are available in the AIP and also in MATS Part 1 1-5 to 1-7. Yes, technically speaking if you fly at greater than 140kts you are required to be 1500m horizontally and 1000ft vertically clear of cloud in Class D to remain VMC, but the visibility criteria remains 5km. When the visibility drops to 5km or less at City Airport, we ask pilots whether they require SVFR or VFR clearances.
This scenario actually cropped up on a LCE board I once had. Visibility is 15km, cloud sct 1400, why would somebody request a SVFR clearance and would you grant it?
The answer is you would grant it subject to traffic and the reason is because of the position of the sct 1400, the pilot would not be able to comply with the visual flight rules and the 1500ft rule.
