The domain has been hijacked. The server is still available, but you'll have to do a bit of work. Here's a description of what I did, and what you should do to get in.
I went to netcraft and typed in britcoin.co.uk. That got me the IP address as of an hour ago, 75.101.180.111
I wrote this in a (DOS line endings) file:
GET / HTTP/1.1
Host: britcoin.co.uk
And ran this:
$ nc 75.101.180.111 80 < request.txt
That got me a reasonable HTTP response, redirecting me to
https://britcoin.co.uk. Of course that redirect doesn't work because the domain is busted. So, I went to
https://75.101.180.111/ and got most of the Britcoin site.
I couldn't log in as yet, because Google's openID implementation gives back a different ID based on the referer address in the OpenID request.
It's all looking good then. The solution is simply to fake the DNS record that you need.
Go to your /etc/hosts file and add this line:
75.101.180.111 britcoin.co.uk
Everything should then work as normal.
Getting you access to your coins and cash has got to be worth a tip right?
5% of what I saved you to the address below too cheeky? Okay, let's call it a beer if we ever meet.