Landlords increased rent with no paperwork

[Threelittletweets]

So, I moved into my privately rented property around 3 years ago, I don’t rent through an agency but directly from a landlord and we agreed on a rental price which was affordable for myself at the time when I moved In.
Throughout these years the rent has slowly increased- £50 here, £30 there which I was told I had to agree to pay or I would be evicted.
My options are very limited, and I was so worried about being homeless so I just payed the increase and now the rent has increased to an unaffordable price.
Of course I am aware that the landlord can increase the rent if they want to, but I’m wondering where I stand if I’ve been paying this increased rent amount for over a year now without actually signing anything?
Some of the rent payment have only partially been paid the last few months.
My landlord has now threatened me with eviction.
I’ve never actually signed anything to agree to paying the increased rent. My original tenancy still states I should be paying the original rent amount agreed when I moved in.
Where do I stand with this?

@THisbackwithavengeance oh believe me I’m tempted, but No I wouldn’t

@Catawaul I’ve emailed the local council hopefully when I hear back they may give me that option if not, I’ll ask

@murbblurb I’m informing shelter and council about the lack of certificates but can’t do anything until Monday.

@Dazedandconfused10 No, I’ve never been given all the correct information. I signed one contract and that was that.
Anytime I’ve questioned him on anything or stated that he has to do something (as in its part of my tenancy) I’ve just been told to shut up or another bullying tactic As soon as cracks started to show I felt pretty useless on the whole situation and was too scared I’d end up homeless if I didn’t just put up with it.

He literally cannot legally evict you with out a gas safety certificate so you hold the cards in your hand