Postcodes allow me to be really accurate with your quotation. However, if they are not available just use the closest town or village and mention the County, as there is sometimes more than one place with the same name!
Sometimes e-mails from an unfamiliar address will go to your 'spam' folder. I will always reply within 24 hours so if after this time you don't have a reply, please check your 'spam' folder. Thanks