dammit, I am usually good with numbers but this time I am two out the SFC1000 that I mentioned went to Norway and is now pristine having just finished a rebuild, but the UK number was D307AJU.
Exported bikes can still be on DVLA, it requires the exporter to inform DVLA, that does not always happen, sometimes the bikes come back and the old number can be "rejuvenated" has happened very recently, with an RGS exported to the IOM, who have their own system, and then re-exported back to the UK.
CLEM