a method is provided for connecting an upwardly extending member to a support member including the steps of providing a substantially rigid support member and then extruding plastics material to form a hollow component which will include the upwardly extending member , and then forcing the members together such that the hollow component slides over the support member , the hollow member being such that it deforms elastically as it moves relatively over the base member such that the two members are secured together by a combination of interference fit , and the elastic gripping of the support member by the upwardly extending member . the invention includes an article manufactured using the method according to the invention . the article may include a post attached to a base plate and the article may include part of a plastics barrier or fence system .