The
maximum fines are 10% of "qualifying worldwide revenue", or £18M, whichever is larger. This is an exercise in stopping companies from claiming tiny revenues when they're actually much larger, rather than fining
genuinely tiny companies (or individuals) a ridiculous multiple of their value (or wealth).
Plenty of things in UK law attract "an unlimited fine", but even that doesn't lead to people actually being fined amounts greater than all the money that's ever existed.