Simply Koi and More Koi

Hi all, i am thinking of getting a koi pond built, I am useless at diy so I want to get some one in to do the build, the pond will be 9ft by 8ft and 5 ft deep 30 inches below ground and 30 inches above just need it to be block work only as I am going to clad it with decking (well my brother in law i...