If the indoors are that bad, then I can't really argue. I was going mainly on the size & the fact that I didn't think they were particularly old, no older than the Sobells at London (built 1972 I think)e and considering several buildings have been used for over 100 years during London's history I thought a few more years could have been squeezed out of them. I'm not going to argue about the monkey/gibbon indoors either, but I will say I haven't seen many rushing to defend the indefensible.As a very regular visitor I truly believe that the sooner the green mile is gone the better. Inside is definitely not better that the monkey houses. The ceilings/roofs in Particular are in poor condition - leaking etc. The small monkey team have worked wonders to transform the indoor enclosures with I imagine only a small budget.
Don't get me wrong, I quite like Twycross, or I wouldn't have returned twice since my first visit 4 years ago, I do think it sometimes comes in for excess criticism on here compared to other zoos that will be defended to the last! A lot of other people obviously like it too, given how busy it was on a pretty miserable April day last Sunday. I think it is an interesting collection with several rarities which has the potential for development, I look forward to the carnivore exhibits (I really hope that happens as that will strengthen the attraction to the general public further too) and a few other improvements.