Having rented for most of my life, it definitely wasn't a lifestyle choice.
However, I know I did well by being a sensible, helpful tenant (let landlord store stuff in storage I wasn't using, forwarded his post promptly, let him know when a letter about planning permission for a next door property came in etc).
When the rent went up, he usually explained his increased costs, what the agent had advised on market value and asked me for my thoughts. It was pretty cooperative. One year I explained that I could see the market had risen and agreed what he was asking was not unreasonable but we had had zero pay rise so found it v difficult. We agreed to delay the increase for a few months.
I know you're p1ssed off, especially because you're stuck, but just suggesting you approach LL to try to find out their reasons and in the spirit of wanting to work together. You need to show you have some "value" to him/her as a tenant over and above the £. as if you do all the tribunal stuff or aggressive stuff suggested, let's face it, you'll just be evicted on some other grounds pretty soon (like he'll say he wants to move in himself and make it his main home, there is no defence to that one).