Do those leaseholds keep up with inflation? I know there's been a scandal about some new builds increasing rents each year, but ours was set 150 years ago at £

Do those leaseholds keep up with inflation? I know there's been a scandal about some new builds increasing rents each year, but ours was set 150 years ago at £5/year and never goes up. We don't even know who to pay it to and no ones bothered to collect it. Its too small a figure. I don't consider myself a serf, if I even had to pay £5/year.