Ha! I'm a regular Joe too and have found Howdens nothing but unhelpful. I know they're trade but they ultimately are losing end-user business. I went into my local branch and saw some samples of kitchen doors but wanted to see couple of built units. As there is an expo store nearby I rang to see if I could go in and have a look.
THEM "No, trade only"
ME "I know but can't I just have a look? I want to see a kitchen in situ then I'll buy it through my installer"
THEM "No, we only sell to trade"
ME "I know, I'm not loooking to buy, just pick one out"
THEM "No"
ME "But how will I know if it's the right kitchen from a door sample, you're not making it easy for your customers"
THEM "You're not our customer, the kitchen installer is"
ME "So you're saying I'd have to buy it blind?"
THEM " Yes"
So reluctantly I will be getting my kitchen from Ikea or B&Q