I don’t think the v2 voice kit or the vision kit are available in the UK yet apart from getting them on eBay for a stupid amount. I did ask Pimoroni if they would be stocking the vision kit and they said they had “no currents plans to stock it” :(
If you have a 3D printer you can print your own case out using this model from thingiverse or this one from adafruit.
Alternatively there are other Pi resellers doing clear acrylic cases but I’d best not post the competition here although you should be able to find them easy enough :)