Both Bobby/Bongo & Zaire lived in the Sobell Pavilions.
The two other london females at that time, 'Messy' and 'Minouche' which came 'on loan' from Dvur Kralov were sent back to Dvur before GK opened as there was no breeding potential with them.
At Bristol the last two Gorillas from the old house, 'jeremiah' and 'Diana' were both sent to London when the old house was closed and their Gorilla island was being built. Jeremiah was both inbred and a non-breeder and Diana repeatedly failed to rear any of her infants(10 births)) successfully- I think Bristol preferred to start with new animals hoping for a better outcome.