I would strongly advise potential customers trying to sell their property to be aware of the standard terms and conditions of Foxtons. Their sales people will convince you that these are standard and how reputable Foxtons is. Do not be deceived.
I signed their contract in good faith for sale of my property. Their buyer did not complete and I am being sued for payment of their full fees on a sale that did not complete because of their buyer being unable to complete. They say this is because as per their T&C their full fees become due on exchange of contract and not on completion of sale. So, you may end up paying full fees even if they do not help you complete the sale.
What agent could do to change your mind?
The agent should only be paid when a sale is completed and not when documents are exchanged. They are extremely unfair in asking full fees when they have not completed a sale.