At that time (1968–69), he was teaching creative writing to students at the American Institute for Foreign Study at their University of Grenoble campus.
His choric song "Essora Tessorio" was performed at the Whitechapel Gallery in 1973, and, in the same year, he was invited to join the International Writers' programme at the University of Iowa.
Howell was Senior Lecturer in Time Based Studies at the Faculty of Art, Design and Technology, University of Wales Institute, Cardiff, and the editor of Grey Suit: Video for Art & Literature – a magazine distributed on VHS videotape, published quarterly and distributed worldwide.
He was also organiser of Cardiff Art in Time, a performance art/video festival, featuring student and professional work from around the world.
Recently [needs updating] he has performed at the Sheffield Media Show, and at Chapter Arts Centre, Cardiff, and read his poems at the Hay on Wye Festival (1990) and at Sub-Voicive in London.
He has also organised numerous poetry readings in Cardiff - by John Ashbery, F. T. Prince, Hugo Williams, Michael Donaghy, Kazuko Shiraishi and others.
In 1997, Howell toured Serbia, Macedonia and Montenegro for the British Council, creating new performances in Belgrade and Skopje, and The World Turned Upside Down was shown at Hollywood Leather, London.
Recently [updating] he showed The World Turned Upside Down in The Carnivalesque, a national touring exhibition, in Brighton.
He performed at Hoxton Hall in June in First Class Evening Entertainments for the English National Opera (ENO) and revived A Waterfall by The Theatre of Mistakes for Gallery 291 in November 2000.
Among others it featured Peter Porter, Fleur Adcock, John Hegley, Hugo Williams, Annie Freud, Roddy Lumsden, Zena Edwards, Tim Key, David J, Alan Jenkins and Clark Coolidge at a US abstract special.