We are just going to tell them we are selling up and down sizing as we want to spend more time in our villa in spain if anyone asks.
It doesnt matter that its my mums villa

we are trying to sell them a lifestyle option isn't that what all the programmes say to do. :)
Never going to mention we are desperate for a sale so we can move to Australia I see us loosing ££££'s if its in the best interest of agent to say and he sees a commission i cant see him not saying anything.
Keep quiet and just say Oz has fallen through but you still fancy a change