Thanks bingofuel.
I'm sure he has, being ex commercial airliner, however I think that the breaking away once visual and either getting a VFR or SVFR clearance after the approach is at the discretion of ATC.
I've just telephoned by local airport and they cannot see a reason why they wouldn't allow it - just as much notice as possible is required.
My airfield has an NDB to which I can practise approaches on in the overhead on a clear day, which unofficially one could build an approach on to a safe height maintaining rule 5 and rule 29 of course based on VFR/IFR. I just wondered what other people did in reality if their destination has suitable weather for a VFR approach with no IAP present, but where the enroute sector was totally overcast and no holes to descend through