Instructions:Twitter users can now get 5% off any ParcelForce UK service at http://www.Parcel2Go.com. Simply enter the code Twitter0509 when ordering.
FOR OTHER PARCEL DISCOUNTS TRY:
Ebay are doing free listing for auction items under £1, you can get 5% off other services too by listing an item for free going here:
follow instructions and paste auction id in.
Then buy parcel with discount code and end the item win win