No, you're treated the same way any homeowner would be when selling their home and should not pay capital gains tax on any increase in value.

It's the same as if you were selling a home bought with a mortgage or with a Shared Ownership scheme.
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But, it's important to remember that this is all based on your home being your primary residence. It has to be that way for tax purposes.

If you become the owner of another property, perhaps by marriage or from an inheritance, your Wayhome property still needs to be your primary residence. If not, you might have to pay taxes that the legal agreements would otherwise protect you against.