If you "own" a flat in England it will be leasehold. The lease will have various obligations, such as you have to pay the ground rent and management charges, not cause a nuisance, maintain certain things, etc. Apparently if you do not comply with the terms of the lease, the lease can be cancelled. That's your property gone, forever, possible hundreds of thousand of pounds down the toilet, no compensation.
In the case I'm about to link to, apparently a lady didn't pay £600 in ground rent, and lost a £100,000 flat.
www.bailii.org/ew/cases/EWHC/QB/2013/2304.html
(I haven't read the details myself, I'm going by a summary elsewhere as to what happened.)
I would have thought that if a lease is cancelled and a flat sold off, that any money left over after any actual debt and legal costs are paid should be returned to the former owner. But apparently that's not the case.
Among other things, the lease on my flat says no pets allowed, no laundry to be visible through the windows. So if the freeholder notices a goldfish in a bowl when they look through the window, or a sock hanging on an air-dryer, does that mean several hundred thousand pounds down the drain, and a nice profit for them?
I don't have in issue with leases being cancelled, as a last resort, my issue is purely that the freeholder should not get any reward other than money owed and legal costs recovered, and an undesirable lease-holder evicted.
The lady in that case claimed that she didn't know about the court proceedings till after her flat had been taken off her. She lived elsewhere so didn't get notice that was served. I don't care about the truth or otherwise of any of that: the bottom line is that the best part of £100,000 should have been returned to her, whatever (if anything) she did wrong. But the law does not require that.