http://news.ycombinator.com/item?id=927714
1. moving parts - this would make the plug a lot more liable to break; 2. I assume this plug doesn't have the fuse.
All in all, wouldn't there be more advantage just to switch to the EU plug instead of another design for the UK plug?
Server appears to be getting bogged down, hence the cached link.
http://news.ycombinator.com/item?id=927714