Originally Posted by Dick Smith
There is no dual frequency problem in E . If cloud is at the minimum the IFR remains on the centre ATC frequency as VFR are not allowed in the airspace without a special VFR clearance from the centre.
Crap.
From AIP ENR 1.2-2 Cm 1.2.3
Special VFR is not permitted in E airspace.
Special VFR is a control zone procedure issued by a controller responsible for that zone and used to operate only in the zone. This usually means the Aerodrome controller, not Centre.