Complex sentence: His last London season was in the 1905 company assembled by Henry Russell for the Waldorf Theatre (now the Novello Theatre), together with Alessandro Bonci, Ancona and Pini-Corsi.
Split into simpler sentences: His last London season was in 1905 in a company assembled by Henry Russell for the Waldorf Theatre (now the Novello Theatre). His colleagues on this occasion were Alessandro Bonci, Ancona and Pini-Corsi.