Re: @"They have some explaining to do."
We don't only want .co.uk. For example, there are loads of .org.uk domains, because of a general impression that .co implies not just a company, but a commercial operation. Likewise, .ac.uk clearly and usefully identifies a very specific sector. Also, even if you'd like to see the government abolished at some point, for the time being .gov.uk mainly hosts legitimate scams.