This is another plant I photographed whilst visiting Heale Gardens, Wiltshire, UK. I’ve had to admit defeat and post without being able to name it. My guess is it’s a succulent of some kind. I don’t have any specific books on succulents and cacti, and my internet searches have drawn a blank. It looks like a sedum ‘jelly bean’ but that plant is smooth and shiny, whereas this one is textured.
It was situated on the same wall as the Ivy-leaved Toadflax and looked so interesting. It’s very small – probably around 5cm or 6cm high – but perfectly formed!