The worst experience that I have ever had, they had the appraisal date incorrect by 100 years, and weren't flexible enough to come up with any other options. I am surprised in these austere times that when someone is offering you their £500,000 house to sell you are unwilling to do anything about it, after admitting it was their fault in the first place. My suggestion is to avoid and use one of the more reputable agents in the town.