A mounting arrangement (10) for mounting one or more additional elongate members such as pipes (12) on a larger existing elongate member such as a larger pipe (14). The arrangement (10) includes a base member (16) mountable on the outside of the larger pipe (14), and can be held thereon by a strap (96) engaging with ratchet arrangements on the arrangement (10). A guide member (82) with a generally n shaped configuration which may include an insert member 88,guides the smaller pipe or pipes (12).