Gardeners’ Question Time – Help!

Time for something different today. Iโ€™ve been doing a bit of a tidy up in the garden over the last few days and I came across this plant that I first noticed last year. There was only one clump last year so I left it alone but it seems to be spreading into separate clumps. I assume itโ€™s travelling underground and not self seeding because I didnโ€™t see any flowers last year.


I actually quite like it. The leaves are plain green to begin with but as they develop they become variegated. Each leaf grows to about the size of my hand so 8 x 5 inches. As you can see they are quite glossy and fleshy. IMG_20180418_105142004Any ideas what it could be? Is it native to the UK? Should I control it or kill it? I have every faith in blogland to sort out this mystery and would really appreciate your help in identifying it ๐Ÿ™‚