Re: The thing about these fines.
An Astute ElReg Reporter might ask such questions of Ofcom. Be prepared to resort to FOI (and be ignored).
An Astute ElReg Reader might simply look at the ICO's last annual report, which shows that for the financial year 2014/15, civil monetary penalties of £1,129k were issued (clearly not enough by a factor of at least 10x), £167k of early payment discounts were credited, and £205k of impairments were recorded.
Put simply, that's 18% of penalties not paid, and the volume of discount suggests that penalties were either paid early in full less the early payment discount, or not at all. My guess is that the early payment discounts are largely the public sector and large corporates who ended up being fined through incompetence rather than wilful intent, but will pony up their fines. But that means the impairments are from the scumbag bottom feeders who knew what they were doing, didn't care, and have no intention of either paying their fine or of desisting from their illegal practices.
So I think that supports the subtext of your post, that is that the vermin get away with it, probably by bankrupting a disposable company to avoid paying. Whilst it is difficult to stop that happening, the ICO should automatically apply for relevant directors to be disqualified when a penalty is unpaid, and pursue criminal prosecutions for repeat offenders.