Poor quality materials (finish on Allendale cabinets became bumpy/lifted)- totally unsuitable for use in a kitchen - many replacements (same issue) and after over two years am now having to take legal action & take the matter to trading standards, as Howdens refuse to refund. This is after recently admitting issues are likely due to moisture ingress, in a kitchen! It's farcical.
I have also had hassle with faulty Lamona appliances (which were at least fixed, after multiple visits and a lot of chasing from me).
I wish I had never heard of Howdens and went for a better quality kitchen, elsewhere.
Save yourself a lot of stress and look elsewhere for your kitchen.