In the U.S., "silverware" is probably even more common (is that what you say in the UK?), but HN readers probably tend to be the type reluctant to use such an obviously wrong term, since the knives, forks, and spoons included in the category are only in very rare cases actually made of silver. :) "Flatware" is more technical/industry, and the next most common if you don't like "silverware"; plus the general "cooking show" trend of everyone wanting to use industry terms to seem like food industry insiders.
In the U.S., "silverware" is probably even more common (is that what you say in the UK?), but HN readers probably tend to be the type reluctant to use such an obviously wrong term, since the knives, forks, and spoons included in the category are only in very rare cases actually made of silver. :) "Flatware" is more technical/industry, and the next most common if you don't like "silverware"; plus the general "cooking show" trend of everyone wanting to use industry terms to seem like food industry insiders.