I think you’ll find there is m8, when I was training it’s absolute definition was termed adverse possession, it’s also correct that you have rights as set out in provisions defined in the landlord and tenant act and the housing act, but let’s not be pedantic.
The highlighted text has to be BS - you can (presumably) show proof of your rental payments into his account.
I wonder if your landlord is declaring this income from his property? Might add something to the negotiations
I wasn't suggesting that he didn't say it only that it would have been a ridiculous thing for him to say. Sorry if I didn't make that clear.
I would rather put it as, playing as strong a hand as possible when in negotiations, but of course all done "in the best possible taste"