As you point out they are a pretty specific bit of kit & more likely to be used in massive Civil UG projects, where the lead in time is measured in years.
Makes sense Paddy & I know this calls for pure conjecture, as they have exercised this week and to not give off a sense of impropriety, that any updates will be held off for a few trading days, at least, should there be anything ready to report.
Is there only a regulatory period for Director trades or are employees included in the restricted trading periods?