Is there a U.K. equivalent of U.S. M-Bag?

I am attempting to purchase a heavy (but not that heavy) 5-volume set
of books from a U.K. dealer. He thought the abe shipping charge was
"crazy" but then indicated that it would be about 55 pounds sterling
(c. $100), which, knowing these books, I likewise think is crazy.

I know that using a U.S.P.S. M-Bag I could ship these books to the U.K.
for probably under $20.

Is there an equivalent service from the Royal Mail?


William M. Klimon
http://www.catholicbookcollector.com