British Wildlife Centre in Surrey. Once a dairy farm, it's been turned into a kind of zoo/educational centre - it is closed to the general public school term time, concentrating on school visits and special bookings, including photography days.
I have misgivings about zoos, but this seems a reasonable compromise between animal welfare & allowing us to get closer to animals that, whilst native, we rarely - if ever see otherwise. Most of the animals are, if not tame, used to people being around, but seem to be handled minimally, as far as I could see, at least. Most animals have 'keeper talks' that include a bit of feeding, ensuring the animals come out of hiding - with very impressive body clocks, the deer came over on the dot of 12.30 for their feeding, even though the keeper was actually a little late.
It was a real privilege to see otters & badgers especially, fairly close up, and be able to take photos - more of which follow after the 'read more', and a bonus otter video. We got there at lunchtime and could have done with more time - we barely looked at the birds and snakes (not in the same enclosure) at all. Recommended to all, especially those with granddaughters and new zoom lenses ;-)