Where can I buy locusts to eat (UK)?

I am interested in trying new foods and I have it on good authority that locusts not only taste good, but are much more environmentally-friendly than livestock. The trouble is, insects of any kind are not a popular delicacy here in the United Kingdom (it's a cultural thing), so such foods cannot be picked up in the local Tesco store. But surely, there must be an online grocer or specialist store that caters for the 'exotic' palette. We do, after all, have many African and Asian immigrants living here. If you know where I can buy locusts, or any other edible arthropods, I'd be very grateful.