MORTGAGE Express v Lambert [2016] EWCA Civ 555 concerned a sale and leaseback. In desperate circumstances, the naïve and vulnerable A (Ms Lambert) entered into a sale and leaseback arrangement in respect of her flat. She was paid a small proportion of the value of the flat, which was then registered in the joint names of B (the buyers). B mortgaged it without disclosing to C (the mortgagee) the leaseback arrangement to A. The mortgage was registered, but no lease was. Ultimately, B defaulted on the mortgage and C sought to sell the property. The litigation concerned whether A had a right that could bind C. The Court of Appeal held that A did not and allowed the sale to proceed.