As an accompanist, Wickham has worked with Sara Macliver,[1] Aivale Cole, Taryn Fiebig, Michael Goldschlager, Fiona Campbell, Margaret Blades, Sergei Leiferkus, Michelle de Young, Krysia Osostowicz, Barnaby Robson, Andrew Webster, Emma Pearson, Libby Hammer, Gregory Yurisich, Mark Gasser and Ruby Philogene[2] in recital.
Conductors he has worked with include Steuart Bedford, Charles Peebles, Jane Glover and Richard Mills.
He has made numerous ABC broadcasts[3] with singers such as Sara Macliver and Fiona Campbell, and his piano trio, PVC.
He was a member of the music staff of the Australian Opera Studio from 2003 to 2006,[5] where he was music director for productions of Giulio Cesare, Don Quichotte, Carmen, Così fan tutte, Rodelinda, Manon, Bastien und Bastienne and Trouble in Tahiti, as well as Elijah and four cabarets.
At the Western Australian Academy of Performing Arts he has conducted Candide,[6] A Midsummer Night's Dream, Malcolm Williamson's English Eccentrics,[7] Trial by Jury, and Poulenc's Dialogues of the Carmelites.