What will happen to sellers that fail to provide their National Insurance number?

[thatonechonkis]

Due to the fact that ebay will now be asking you for NI if you make over £1,770 or 30 sales in 1 year, what will happen to those that fail to provide their NI?

[four_mid_able]

See ch5/my5 "scams don't get caught out ,Alexis CONran" (apt surname)