Dudley certainly had cassowary in 1978. I'm fairly sure that the species was at Dudley after this date but I don't have any later photographs of them.
According to ZTL, they held them to 2009, which is probably right.
I saw them at Twycross on my first visit around 2009, but they were gone by my next one a couple of years later.
Bristol had them until Wild Place opened then sent them there, only for them to return briefly, but they were gone by February 2015.