Hello all,
After a lot of chasing around a dealer identified this one for me. It turns out that it is a Mow Master with a minimum age of 42 years and possibly as old as 50 years as there is nothing to date the frame he is going off the fact that the motor which is a Honda G65 with three bolts holding the fuel tank.
Parts for the Mower are still available so was able to purchase the drive sprocket and now we have a working mower. Just mowed the lawn with it before taking photo.