If you sell 50% of your property for example, when you die or leave the property, 50% of its value at the time of death or leaving the property will go to the provider and 50% to your beneficiaries so the provider benefits from the increase in the equity of the property.
If you do not sell your entire home initially, it may be possible to sell further shares in it and receive further lump sums in the future.
The amount that you receive will depend on your age. The younger you are, the longer you are likely to live in your home rent-free, so this will reduce the cash lump sum that will be offered so selling 50% of your £200,000 home would net you approximately £60,000.