Of course we always try to avoid generalities in these types of discussions, but generally speaking, applications at certain consulates in Africa, South Asia, the Pac Rim, and South America are positively *dripping* with forgeries.
I have seen street vendors outside a British consulate in North Africa selling tailor-made British Gas invoices, BT invoices, wage and salary slips, bank statements, you name it. Same thing outside some British consulates in South Asia.
The show you saw with the Indian HSMP applicant used some highly contrived cases designed to make VSD look good. Totally propagandistic. The case with the Welsh woman didn't reflect at all what happens in real life. To be frank, it was all tosh and toilet. Contrived through and through. NOTE: just because VSD used some self-serving propaganda on TV doesn't mean they are necessarily bad, it just means they like to promote themselves as good guys.