Thanks to all, been in touch with Appleby, very helpful but no joy as yet, those Barke knives look interesting, thanks to Cutting solutions, but I really can't figure out wether any of them would fit on the block, it's a possibility. The dimensions are: 318mm x 12mm x 1.4mm, three holes along centreline of blade, one in middle of blade is 159mm from either end to centre of hole and two end holes are 59mm from their respective ends to the centre of each hole, blade is double sided. I have found a Sealy blade for their 330mm thicknesser which has all the holes in the correct positions and is 12mm wide, it is 2mm thick but I'm not sure 0.6mm is going to make much difference? It is too long but if 6mm is ground off each end, that would make the blade identical except for the slightly thicker blade, do you think this is my best bet?
Thanks and sorry for the late reply, I've been a bit ill for a few weeks and took my eye off the ball
Gavin