Used accessories seem to be the least offensive part of this. Single screw holding a galv box with cobbled together support behind it. No repair to wall and accessory sitting back behind wall level. T&E slung across the wall as no one will see it.
None of this is particularly uncommon and certainly isn't restricted to work from kitchen fitters. Plenty of sparks don't give a damn and will do the bare minimum required - or less than required if they can get away with it.
There's another thread with arguments raging about requirements and the way I see things is really simple. I carry out work to my own standard. It's a standard that often goes beyond regulatory requirements and I'll explain to customers where my proposals go beyond regulatory requirements and why. Some customers might deem some of my proposals unnecessary and feel a lesser approach, at a lower price, will better suit their needs and I'm okay with that.
I mention this because I'd also like to point out that while everyone seems to agree the socket in this thread is horrendous, there isn't much actually wrong with it from a regulatory perspective. Assuming it is electrically safe, and we've no evidence to suggest otherwise, this could be considered acceptable in every way other than aesthetically.