Thanks Mike, Actually took that tray out the bottom and ordered a new Bradley one from grakka here in the UK. Fits like a glove.
Believe me i'm no carpenter but with a bit of thought and trolling through various sites to see what others have done, i managed this.
I must confess to jumping on an idea i saw on ebay, also used his idea for a cutter. If i purchased these items i would be £110 pound lighter. All up both items have cost me less than £50 and a bit of elbow grease.
Well pleased with the results.
Just whacked four slabs of silverside in about 10 mins ago, these should yield excellent results.