Sorry, Robyyz, but I would never, ever help you or any one I did not know well out on this. What if there is contraband in it (Sorry, but I do not know you). With customs issues, etc. it would not be worth the hassle.
Have you considered shipping to someplace in England that you could pick it up from just before you come home? Perhaps Her Majesties' Royal Mail has such a service. I am sure that they would have a website for contact information.
That way you are responsible for bringing this mysterious parcel through customs and onto the plane.