It must seem alien to most in the west the sheer lack of protection renters have in England (property law is devolved); it is based entirely in private contracts, and what law does exist is rarely if ever enforced. Just last week Parliament rejected an amendment requiring all rented property be "fit for human habitation". Rent rises are not capped and often used to evict tenants, the legal minimum notice for eviction is two weeks (this does not increase with time rented), the landlord is required to carry out repairs but notifying them of such can be grounds for eviction.
These may be the extremes of renting in England; however you can ask any renter about being charged outrageous contract fees, referencing fees and being screwed over on leaving over the deposit and "cleaning fees" (even when the property is left in a professionally cleaned state). There is little-to-no repeat custom in renting so they get away with it.
Little movement has come from either of the two main parties (Labour & Conservatives) to improve this, thus to have stable accommodation you have to look to buying.