Jane Austen Update

Back in October I noted that James Andrews' portrait of Jane Austen (1869) was up for grabs in Sotheby's London auction on 10 December (CLICK). This is the portrait that will be used on the new £10 banknote (CLICK). It fetched £164,500, bought over the telephone on behalf of an anonymous private collector (CLICK). Will an export licence be required for this piece of our cultural history?