Not wanting to stir anything up but purely interested in how this works in practise..... who does this record get submitted to for acceptance? Cleveland or Yorkshire and if one accepts it does the other have to?
Not sure about Cleveland, but for Yorkshire the finder, and anyone else can submit the record to the VC 62 recorder.
The BBRC still report on Red-breasted Goose so if the VC62 recorder felt it appropriate the record would be submitted to the BBRC.
The BBRC will acccept some wildfowl records but often say in the notes that truly wild origin cannot be 100% proven, so even though some birds go on the British list figures it still doesn't alter the situation that at times there is no real way of knowing if a bird is wild.
I guess all you can do is use the BBRC report as a guide. If it's felt it is obviously an escape it won't get that far on submission. However, someone has to submit the record first.