1 Finding the right address
If you know some address details, the website provides the postcode. Type in the details that you have into the postcode finder and the official postcode is displayed. This service is free but you have to register. You are limited to 12 searches a day.
The address finder works in a similar way. If you have the postcode, and ideally know the house number or name, it returns the correct concise postal address.
2 Tracking a parcel
When you send a letter or package by Recorded Delivery, Special Delivery or International Airsure, the receipt has a 13-digit reference number. You can enter this on the ‘track and trace' tool to find out the delivery status of your item. The tool works for packages that are sent to you. There is no limit or registration requirement.
3 No late Christmas presents
The site also helps you find the recommended last posting dates in time for Christmas. Click on the ‘Quickfinder' drop-down list and go to ‘Christmas posting dates'. Enter the country you are sending your mail to and it will display the last posting date.
Dr David Matthews is a GP in Thames Ditton, Surrey