A big thanks to everyone who took time to reply. Hopefully in times to come I'll be able to offer my own assistance to others.
The things that arise, as far as I can see, are:
1. I should use pre spray & rinse that are safe all round. How about prespray gold followed by fibre and fabric rinse. Would this be okay for synthetics as well as wool in cases where I wasn't 100% sure what I was dealing wth?
2. I really need to be able to identify the Belgian Wiltons! Can anyone off a quick guide?
If I want to offer low moisture, would agitation with a sebo duo folloed by a sebo vacuum do it, or do you need to have an expensive 'host' machine?
Many thanks again!
Owen