Back on that 'bypass the filtering' idea...
Some of the services I have seen offer multiple IP addresses with new ones being added every month or two.
I doubt there would be much cost involved in setting one of these services up (eg free 'open source' solution or low cost software) and if one had 100 customers paying 1 pound a month, while costs total 25 pounds, you can see that it would be easy to make 75 quid a month from 25 pounds outlay.
Hit 1000 customers and you make 750/month, hit 10,000 and you make 7,500 pounds a month... and all costing end users just 25p a week, while making a profit of 75 pounds per 100 users.
Billing is automated, even if some didn't pay you could afford to allow them access for up to 3 months before going through the 'non payer list' and killing their ID off the server.
How many men do you think would be willing to spend more than a pound a month to 'bypass the ISP filtering' so they can look at any site they wish ? I'm thinking a few million.
It could be a strong temptation to set up some servers for this, and once cash is rolling in, you would rent (or buy) whole servers and not be under another hosting firm's rules at all.
Most guys would find out from a friend, rather than any advertising which would be equally visible to partners and authorities, so there would be easy profits. Anyone fancy living in the Caribbean for the rest of their days, while the ISPs try to block some series of IP addresses ?
On a technical issue, IP addresses are likely to need to change in the next 5 years.
Here's a note from someone with far more knowledge than myself on the subject:
"Ipv6 is the next in the advancement of IP?s. Compared to Ipv4 which allows for only 4,294,967,296 unique addresses, Ipv6 uses a 128-bit system will hold 340-undecillion (34, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000) addresses. This number is so vast that there are more unique IP addresses than stars in the universe, as we know it."