I didn't realise so much time had passed since I last posted on here...
Here's the new hi fi rack, made from Australian Blackwood to my specification:
thumbnail_IMG_6046 by Martin Johnson, on Flickr
It's a real looker.
Below is a sample of the isolation racks. There are nine in total, what I love is the white pattern matches the top shelf of the rack :
thumbnail_IMG_6049 by Martin Johnson, on Flickr