Jobandknock thanks so much for the input it really helped I know its a bit of a crap job just wanted a bit of input from other people. there has been a few problems all through the job within a day 2 of the door handles came off in our hands? he said it was faulty knobs but I'm not that stupid he had cut the screws to small so it had no hold Thanks again1. Should this have been mitred? A bit of a difficult call. Were the upstand solid wood, then absolutely, bit as it is edged and end lipped MDF in practical terms I think he has given you a more durable option than a mitred joint. Had it been me I'd have pointed out to the customer that a mitred joint in MF-MDF will always have a sharp edge on it and be far more prone to chipping over time (sanding it to remove the arris leaves s white line in the corner). But I would at least have given the customer the option of choosing which they preferred. Agree that the upstand joints could have been neater. I also tend to silicone the worktop to upstand and upstand to wall joints as part of the install
2. Should these be screwed from the top? Ideally, no. Any screws from the top will need to have shorter screws and so will be a poorer fix. Screwing them from the top should not have presented problems to a kitchen fitter - tools like drills with right angle chuck adaptors should be in evey fitter's kit these days - but the fix would not have been as good. As others have said, though, he should have at least covered the screws with FastCap or Quikcap covers (small self adhesive melamine discs) to hide them. There are clip systems available to install cornices which are invisible but these are relatively unknown in the UK - e.g. Gratverbinder by Knapp Verbinder (Austria)
3. Is this good enough? Frankly, NO!
4. Drawer will not soft close, he says it is faulty runners? A slightly tricky one. As he hasn't supplied the kitchen you are actually asking him to spend his time to fix someone else's problem. Under the circumstsnces I think he should have suggested that you get him a new drawer/runners and that he would fit it/them. That is just good customer relations
5. Should these gave been screwed from underneath? I don't think so. But they could have been hidden better by the judicious aplication of some (well masked) white spray paint