I did discover an absolute fucking howler of a mistake that I made in March tbf 
It’s a result of a whole mess of things, really. The people with 10x fewer cases than me are in a different part of the business, so that can be partially hand-waved away by saying oh they have other matters taking up their time (so do I!). The bigger issue is that we’re fundamentally a support function and have just about managed to keep up our level of service despite all this, so any pushback gets met with “well, what’s changed now?” (my number of grey hairs, for one)
I’m only snapping because we are once again been asked to do more with lower spend and a recruitment freeze and there comes a point where someone higher up the pay grade than me needs to say “look you need to either cut this portfolio back by at least a third, or be prepared to spend £megabucks on sending stuff out, because Dr Epimer’s about to spontaneously combust” and I’m not sure there’s any willingness on their part to do it.
Also probably shouldn’t be deliberately dropping the ball on stuff right now when we’re looking at redundancies in the next few months.