The Berkshire College of Agriculture near Maidenhead are holding several open days of their teaching zoo collection this year, following a few successful days last year. Tickets need to be booked in advance, for either morning or afternoon, but it looks like an interesting little collection (the usual meerkats, but also Bengal Slow Loris and Round-eared Elephant Shrew as listed on Zootierliste)
Dates and tickets can be found at the link
Events - BCA
Dates and tickets can be found at the link
Events - BCA