The law doesn't work by having ISPs block websites. It works by imposing a legal duty on website operators to a) determine what risks there are to their users from the content that may appear on their website; and b) develop and implement policies to eliminate or substantially mitigate that risk. All of the blocks listed above are voluntary self-censorship to avoid obligations under the Act.
If Ofcom does decide to pursue you, they will start by asking to see your risk assessments and policy documents, and would then in theory proceed to legal action, but in practice would just ignore you, because you're just protesting, and they have no chance of getting the millions in fines out of you.
I'm not sure what content you could put on your page, but if anyone suggests a message of support for a protest group called Palestine Action, I most strongly recommend that you don't do this, because the nature of their protests has led to their proscription as a terrorist organisation, and the resultant legal action against you would be of a very different nature.
I have prepared a page that has a message of support for Palestine Action, as well as calls to dissolve parliament. I'll sleep on it, but I'll probably deploy tomorrow.
While I'm very interested to see what the outcome of your experiment, I think this choice of content will be a bad test. Calls for the dissolution of Parliament are innocuous, but support for a proscribed terrorist organisation is beyond the scope of Ofcom and, if it is investigated, would be investigated by the Secret Intelligence Service. Depending on the relationship that the country where you live has with the United Kingdom, you may be denied service by financial institutions, for example.
Starting with less extreme content, such as a how to buy drugs guide, and gradually escalating to provoke a response, would be wiser.
If Ofcom does decide to pursue you, they will start by asking to see your risk assessments and policy documents, and would then in theory proceed to legal action, but in practice would just ignore you, because you're just protesting, and they have no chance of getting the millions in fines out of you.
I'm not sure what content you could put on your page, but if anyone suggests a message of support for a protest group called Palestine Action, I most strongly recommend that you don't do this, because the nature of their protests has led to their proscription as a terrorist organisation, and the resultant legal action against you would be of a very different nature.