Notch, there are several different actions that can be considered to have implemented a commencement on site having and defining that as 'LA's consider a minimum of 2 trades on site as being acceptable criteria for work having been started' is a bit meaningless. I know what they are, so does woods as do others on here but that OP is now going to just forget it and see what happens so there's no need to impart that knowledge to the thread now. It's been written about many other times on the forum after all.