Use a 24v saw. I can think of many reasons to "stop destroying our great country", however stopping UK consumers being able to buy products as cheaply as possible, would not be on the list. If HMRC cannot or will not do anything, it's best to find other ways to make your business succeed. Trying to compete with products made in China, that is being sold online by Chinese sellers is very difficult, if impossible, irrespective of how it's done. They are always 2 steps ahead.