I'd always assumed that bush-crickets were herbivores, but after looking at this picture of a Dark Bush-cricket once I'd got home from Priory CP today, I realised that it was eating a snail. A bit of googling confirmed that they are actually omnivores. Learned something new today (but will probably forget it again fairly soon...)
Here's a couple of un-chewed snails. There were plenty of small ones on nettles.