london up 2.56%, page-7

They are only listed on AIM and the ASX as far as I know but you may be able to view their stock from different German bourses and order depository interests on AIM.

If you want to fully understand it and maybe trade depository interests on AIM go to : http://www.cfcl.com.au/html/investors.htm

then go to: FAQ about trading shares on ASX and AIM

Or setup an AIM account direct in the UK.
http://www.londonstockexchange.com/en-gb/products/companyservices/ourmarkets/aim/joiningaim.htm