I have placed a link to a download of a BBC radio broadcast of Sullivan's 'The Zoo' believed to be from 1972 in the downloads section.
Carboy - John Boulter, Eliza - Joy Roberts, Thomas Brown - Leslie Fyson, Laetitia - Lissa Gray, Grinder - Ian Wallace
BBC Concert Orchestra conducted by Ashley Lawrence
Carboy - John Boulter, Eliza - Joy Roberts, Thomas Brown - Leslie Fyson, Laetitia - Lissa Gray, Grinder - Ian Wallace
BBC Concert Orchestra conducted by Ashley Lawrence