Fruitscone 32 is euro size 70 and 30 is 65. Cups depend on the brand, as some euro manufacturers skip the double sizes - instead od D, DD, E they would have D,E,F etc.
The issue with euro sizing - women are told that what they measure in cm is their bra size, so if you measure 75 cm underbust, you should buy size 75 bra. EUR size 75 is converted to UK size 34 on the bra labels. However, 75 cm is not 34 inches, it's only 29,5, so that person would not need a UK34 bra, they would need 30 or 28 (EUR 65 or 60). So basically, if you buy a bra based on the Euro fitting advice, you end up with the same result as if you added 4 inches in UK system.