My local MP won’t do anything and basically dismissed me as a pedo/terrorist for even considering talking against the OSA.
What can be done if those who represent you, don’t?
If you're an engineer, contribute to technologies that take power away from those who lord over you. Which in this case would be distributed, censorship-resistant communication technologies. There's a lot of work to be done, not only in hard engineering, but also in things like UI and marketing, as widespread adoption is the best way to maximise the chance of success. For all its flaws, cryptocurrency (in particular anonymous ones like Monero) is a demonstration that this is possible: no government desires for its citizens to have a means to transact large sums anonymously online, yet Monero still exists. And as governments impose more restrictions on the internet, there'll be more and more demand for means to bypass those restrictions.