I visited South Lakes today and have very mixed views on the place. The mixed exhibit ideas I thought had some great pros, social enrichment, education etc. I know most seem to dislike the S American exhibit, this is very similar to the one at Jersey Zoo and few would dispute their competence! They don't have the tapir or cappys though If I remember correctly.
The walk through exhibits are somewhat risky tho, loose emu.. they can be unpredictable and dangerous, especially to kids at a good kicking hight. Having the red, black & white / belted lemurs together seems risky also, in fact Im sure I saw at least one possible hybrid, not to mention the risks with human contact. I know such exhibits are now common place but they at least should be supervised unlike South Lakes.
All that said they have some impressive enclosures (macaw aviary) and naturalistic stimulating environments have clearly been made a priority, for its size the collection surpassed my expectations.