Cheers .... I tried to book it with autoglass oniine, selected 1 chip, "match size" 2mm. But got:
"You probably don't need a repair
Because the chip is very small, it will only affect the surface of the glass, not the deeper structure which keeps your windscreen strong. This means the damage won't spread, even during bad weather or bumpy journeys."
unless I select smaller than a 2 point coin, it wouldn't let me book a repair ...