Can I ask what suppliers/firms you used for your kitchen?
DIY kitchens for the units- very good quality.
Worktop express for the worktops because we wanted iroko; if you want granite I'd just shop around but for wool/laminate they are fab.
AO for the appliances.
Belfast sink was just an internet search although the ones from DIY kitchens are good value too.
Handles bought online (etsy, I think) because we wanted something a bit different.
Wineware for the custom rack then unit built round it.
Local carpenter, tiler, painter and plumber for the fittings, shelves etc.
I did plan carefully (things like appliances in sales and haggling with people, looking at 5 million door knobs) but could have done it for about 6K if we weren't such fusspots: bespoke colour, in frame doors, bespoke units then needed colour match spraying, hand made tap FFS.
If you weren't bothered about something unique on a tight budget you could organise it much easier than I did. It's the difference between making decisions sat in B and Q then ordering or making them at home then ordering them from a few companies. We've never bought a kitchen before so went a bit nuts.
If you do decide to do it that way, feel free to PM me.