This is the official reply from Ducati:
Dear Mr Stanley,
Referring to your message and to "how many Bayliss" discussion, I confirm
you we produced 400 units of 998s Bayliss (300 on-line and 100 off-line). 30
are the 998s Bayliss bikes sent to UK market. I hope I have been useful to
you and I remain at your disposal for any further information.
Best regards
Massimo Davoli
Ducati Customer Service