Still working my way through the electrical faults on my 200tdi I've replaced all the fusible links with a duralite fusebox and I've got most of my electrics back but my radio still doesn't have a permanent live, but my clock does anyone any thoughts on anything else I could try ?

The feed supplying the head unit memory is from fuse B1 (5a) on a purple/white wire, so find that.
Or install a new feed from fuse B1 or even from the clock which ever is easy. Simples really.