Giddings joined Jethro Tull in 1991, succeeding Maartin Allcock. He played on the albums Catfish Rising, Jethro Tull In Concert, The Beacons Bottom Tapes, Roots to Branches, J-Tull Dot Com, Living with the Past, The Jethro Tull Christmas Album and Aqualung Live. He toured with the band all over the world until 2007 when he was succeeded by John O’Hara