Absolutely everything!! Starting with their kitchen designer who was completely useless and ending with their customer service who don't take complaints. The designer drew up a plan but completely mis-represented my very accurate drawing. The result - the units did not fit. They sent a small sink and housing unit when the normal size did fit. Result I had to start the work all over. Every wall was the wrong length on the plan so space on other walls was wasted too. Worst of all is they of course have small print disclaiming any responsibility for their designer getting it wrong. Outcome - I ended up with a kitchen design I did not want. And to make the situation even worse they don't have a complaints dept, just a customer service dept who are completely spineless and just went along with what the branch manager told them. So claims I made for compensation were completely ignored. The message 'well that's just tough' ie the customer is always wrong!! Will never ever buy anything from Howdens ever again.