FireBlade, thanks for that, and apologies for the late response.
This is indeed useful, but we are hearing that the process has changed and it can all be done online - info direct from the horse's mouth. We've also been advised by our lawyer that we will need to wait to ask for the clearance as the visa application is taking so long the clearance will be out of date by the time its reviewed. All good fun...
Thanks again, and cheers, Hutchy.