Jonno - assuming you're serious:
Have you looked at the pic in question? It, and this thread, are just amusing satire.
If using PS to post-process a RAW image is 'cheating', then so is auto-focus, auto white balance, auto ISO, auto F-stop... (i.e. any point and shoot camera or any 'auto' settings; and the use of any 'night mode', landscape mode' et al must be 'cheating' then).
All post-processing does is to accomplish out-of-camera what any auto settings do in-camera.
It is possible to manipulate images further than this but then you're getting into the realms of digital art which is almost a different genre.
There are also some can't resist that last 'tweak' - the over-processed image is easy to spot; it is often clumsy over-saturation which looks like Sellafield had a bit of fall-out.
Anyway, back to BG's pic. How did you get the Duchess of York to hold that torch?