Not going to say too much, as don't wanna say anything I shouldn't, but Heythrop is very much active, and I get on very well with one of the keepers, and frequently visit with friends.
Whilst Jim, has openly been looking to sale / retire, they are operating very much business as usual.
I can't / wont say too much, as it's not public information, but filming this summer at the zoo took place with a number of species for a massive blockbuster movie.
Heythrop also, still have an active breeding group of penguins, and whilst some species have moved on, their have added new animals to the collection as well, and remain busy for encounters, tours and filming work.
Also, in regards to the CGI comment, to create actual and life like CGI you do actually need to do some filming with real animals to get the right sort of imaging and movements, without any background work, the CGI would look most tacky, the better quality CGI will be based on green screen film and adapted, so in regards to good content and blockbuster movies, CGI is simply an assist.
I can't name all the species currently held, but Heythrop do still have;
12/13 Penguins
1.2 Red Kangaroo
1.0 Crowned Crane
1.0 Eurasian Eagle Owl
1.0 Indian Eagle Owl
Multiple Runner Ducks
Multiple White Pigeon
Family group of 6/7 Squirrel monkeys
2.0 Ring Tailed Lemur
6 (not sure on sexes) Rhesus Macaque
0.1 Eurasian Grey Wolf
3 Red Foxes
3.0 Zebra (not sure on species)
Multiple Rabbits & Guinea Pigs
2.0 Miniature Donkey
2 Llama
3.0 African Pygmy Goat
4 Meerkats
1.0 Striped Skunk
1.1 2 Toed Sloth
2.0 Black Indian Leopard
1.1 Indian Leopard
1.1 Amur x Bengal Tiger
2.0 African Lion
5 Flamingo's (I believe they are African, not sure which species)
Many peacocks and peafowl
0.1 Raven
0.1 Blackbuck
1.0 Red Deer
1.0 Raccoon (He is very old though, and not very often seen)
In the reptile house, there are many species but this includes
Monocle Cobra
Plated Lizards
African Dwarf Crocodiles
Ball Pythons
Burmese Python
Common Boa
Beaded Lizard
Crested Gecko
Bearded Dragon
Green Iguana
Californian Kingsnake
Black Kingsnake
Mangrove Snake
Green Tree Python
Scorpions
There are multiple other species as well.
The old Pygmy Hippo house is now empty, but Goats are being used to cut the grass down, and they do plan to get a new species to go in there in due course.
Of the two wolf enclosures, following the death of most of the pack, just one female remains. One enclosure has been cleaned up and may get new species, there is a chance the female wolf may move on, or get companions, but was undecided.
There are also multiple tanks of fish in the welcome room, I am not really a fish person, so not sure on the species.
But the collection is very much active and still running despite the changes mentioned above, they are busy as ever with film work and outreach work, and they continue to be used for very big projects. The use of animals is also vital to assist major CGI, so there is no desire to stop any time soon from what I've been told.
Owner has looked to sell if possible, but he is still very much involved day to day, and it is very much business as usual.
As for tours and encounters, a number of the animals used in these are ageing, so some encounters may not be possible long term. Obviously the wolf walk no longer exists and the tigers are now 15, but the zoo is very much still used for filming.