Bought a new kitchen from Wickes, after a few weeks marks started to appear on our Zanussi hob and hood. Wickes told me it was our fault for cleaning the hob! We had used hot soapy water, but they insisted we had used a cleaner that was not for stainless steel, and the manufacturer would not do anything to resolve this. I dont know what kind of SS they make these units from but it looks like a material defect as the marks all run in the exact same direction. So if you dont use a very specific SS cleaner then it is your fault for any defects! All that money spent and our new kitchen experience ruined due to dreadful customer service. Never using Wickes again!!