The big cats are safe in enclosures, but you'll be pretty close up to them, as you can see from the pictures here.  You'll even get the chance to feed one of the cats.  they're safely held in enclosures throughout the experience, you'll be only millimetres away and will even get the chance to hand feed one of the cats!  There's a short presentation on the work of the Wildlife Heritage Foundation, both in the UK and overseas.

The encounter lasts for around two and a half hours. Purrrrlease read the important info before you buy - it does say you can bring up to four guests for £20 per guest as a donation to the Foundation.  Both reviewers on the Buy a Gift website recommended this gift highly... see for yourself!