The bass looks really poor, I have to say. It's not just one issue here but several, which is what tends to convince me that the overall workmanship is poor and the builder doesn't care. Letting a bass go with one flaw and hoping it wouldn't be noticed is lazy and unacceptable but to send something out with a number of flaws like this, all of which are quite obvious, just shows contempt for the customer and the £2300 spent. The binding is stained. The paint is flawed. The fret ends look ridiculous (is one of them casting a shadow in one of those photos?). The scratchplate looks like it's been hand cut with an old tin opener. The neck and bridge are out of alignment, and the OP didn't even notice that!
I am guessing the OP is in the UK given that he stated what he'd paid in £. I do often wonder if UK customers now are given short shift at times because of their apparently meek nature and the additional issues and costs with shipping in and out of the country. In this case, we once again see an OP tip-toeing around the issue of naming this botch-jobber in the hope that this would give him some bargaining power to get the bass fixed, unaware that bending the knee at such an early stage just signals defeat. FWIW, I wouldn't want such a sloppy bass back; I wouldn't want an ornament of insult sat around my house reminding me of the episode. OP, you're the customer and you're supposed to get what you want when you're spending the thick end of two and half grand. Grovelling and hoping the builder will deign to fix his issues is just... not what I would do. It reminds me a bit of the Letts bass saga, or the handful of posters on Talkbass clutching at straws and hoping Joe Zon would finally build them the bass they had paid for a decade ago.
We've had it here before with dodgy builders like Cristian Grosu and Grosmann basses, where builders were named for sending out subpar instruments and it saved the community plenty of headaches in the process. Not here, but on Bass Upfront and groups like that, I was able to warn a few people to read up on some of the horror stories about Grosmann including one on this very site. I'd like to think I saved a few people some cash and some disappointment. OP really should name the builder in this instance to prevent others going through what he has had to put up with.