I never liked the idea of leasehold properties, would never have bought one myself, and, for anyone starting out, suggest you avoid them like the plague.
The thieving "land grabs" happened a long time ago and the majority of "acreage" has continued to swap hands amongst the landed gentry or the very wealthy ever since. As a Northern pleb, it's quite satisfying to have acquired a little of it back, no matter how miniscule.
Caution: you might think you own it, but never forget it can always be compulsorily purchased or taken away from you at any point, if the government and their backers want it for something.
Wonder how many people's lives were upended with the unmitigated fiasco that was HS2, for example?