Union Jack - with regard to the annuity, the situation in the UK for holders of the Albert Medal who declined to exchange their medals is quite clear. In 1968, the original royal warrant for the medal was amended with the following:
"...surviving UK recipients of the Albert Medals are entitled to annual gratuities of £100*, irrespective of whether the medal awarded is in gold or bronze. Gratuities may be paid to other Commonwealth recipients under local regulations"
As far as I am aware the surviving George Cross survivors are receiving the full £10k annuity, as the awards were given by the UK, so logically this should apply to holders of the Albert Medal.
* This sum was the same as that paid to George Cross recipients at the time.