Re: 20-30% of sites available via ipv6
It's true, the UK is woefully behind most other countries in Europe when it comes to IPv6 use. We'd be lucky to make it into the European top 30 some day. For now we're trailing behind countries that have only recently got stable electricity networks and indoor plumbing...
Another comparison? Have a look at basic hosting accounts. In many EU countries even very basic (three quid a month) hosting accounts give you an IPv6 block as standard. In the UK even major hosters will tell you they have no idea when they'll implement it. It means that I have now consolidated all my hosting that used to reside at seven hosters at just two that do understand IPv6. Mythic Beasts for the more techie stuff and OVH for the more mainstream heavy load stuff. Good riddance.