finding the right species of tree

can someone please help me!
I am desperatly looking for the best cultivar of hinoki cypress for bonsai .and I want to get a cryptomeria japonica "sugi" aswell but want them as raw material and not as ready styled bonsai. not sure where the best place to get these from can anyone help me?

I'm surprised none of your compatriots had any opinion. As far as I know, the most popular cultivar of Hinoki for bonsai is 'Nana Gracilis.' Of course I am not familiar with British bonsai nurseries, but I am sure both plants are easy to obtain. You will have to ask around & make a few phone calls.
Iris