A pipe joint for joining a first conduit section to a second conduit section, the first conduit section having at least one first connection end comprising a wall defining a receiving recess for receiving a second connection end of the second conduit section, wherein the joint comprises: at least one first groove or channel formed in one of an internal surface of the wall of the receiving recess of the first conduit section or an external surface of the second connection end of the second conduit section; a plurality of second grooves or channels formed in the other of the internal surface of the wall of the receiving recess of the first conduit section or the external surface of the second connection end of the second conduit section, the plurality of second grooves or channels each being axially spaced apart from one another, the or each first groove or channel and the plurality of second grooves or channels being accessible from the outside of at least the first conduit section; and an elongate flexible anchoring element in the form of a strip comprising a plurality of anchoring portions (52, 54) axially spaced apart from one another and joined by a bridging portion therebetween, the strip comprising the plurality of anchoring portions (52, 54) transversely spaced apart across the strip with the bridging portion disposed between them, and the anchoring (52, 54) and bridging portions being configured such that each anchoring portion (52, 54) is placeable in a respective one of the said second grooves or channels, wherein the elongate flexible anchoring element is inserted into the at least one first groove or channel and the plurality of second grooves or channels so as to be seated in and between both the said at least one first groove or channel and the plurality of second grooves or channels when they have been brought into register or alignment upon insertion of the second connection end of the second conduit section into the receiving recess of the first conduit section, whereby upon said insertion and seating of the anchoring element into and between the in-register or aligned at least one first groove or channel and the plurality of second grooves or channels, with the anchoring portions (52, 54) of the anchoring element seated in the said second grooves or channels, the first and second conduit sections are united so as to be axially substantially immovable relative to each other. at least one first groove or channel formed in one of an internal surface of the wall of the receiving recess of the first conduit section or an external surface of the second connection end of the second conduit section; a plurality of second grooves or channels formed in the other of the internal surface of the wall of the receiving recess of the first conduit section or the external surface of the second connection end of the second conduit section, the plurality of second grooves or channels each being axially spaced apart from one another, the or each first groove or channel and the plurality of second grooves or channels being accessible from the outside of at least the first conduit section; and an elongate flexible anchoring element in the form of a strip comprising a plurality of anchoring portions (52, 54) axially spaced apart from one another and joined by a bridging portion therebetween, the strip comprising the plurality of anchoring portions (52, 54) transversely spaced apart across the strip with the bridging portion disposed between them, and the anchoring (52, 54) and bridging portions being configured such that each anchoring portion (52, 54) is placeable in a respective one of the said second grooves or channels, wherein the elongate flexible anchoring element is inserted into the at least one first groove or channel and the plurality of second grooves or channels so as to be seated in and between both the said at least one first groove or channel and the plurality of second grooves or channels when they have been brought into register or alignment upon insertion of the second connection end of the second conduit section into the receiving recess of the first conduit section, whereby upon said insertion and seating of the anchoring element into and between the in-register or aligned at least one first groove or channel and the plurality of second grooves or channels, with the anchoring portions (52, 54) of the anchoring element seated in the said second grooves or channels, the first and second conduit sections are united so as to be axially substantially immovable relative to each other.