"Did not have the time to faff about, too much on, think it will be ok" you are falling into the "that will do" category, not a good sign, every customer deserves the best, your reputation is worth more than anything, always give 100% it will pay off in the long term.
I can see how what I wrote could give that sort of impression , poor choice of wording from me perhaps, however I can assure you that I do NOT fall into that category, I meant I just didn't have the time to be ultra fussy with the aesthetics due to the customer pestering me to do a couple of other jobs while there , all terminations were checked and checked again for tightness, single conductors all doubled and the used cable entries on the top of the CU were all sealed with clear silicone to meet and in fact exceed the IP4X requirement. All circuits were also tested properly.
I always put 100% into my work and it does pay off, have work booked in right up to the end of March.