Crassula.

Now lives in the conservatory as it's too heavy to move  outdoors for the Summer then back in about this time of year. An indoor entry in view of the fact everything is soaking wet following an intense storm which dropped half a month's rainfall overnight followed by more heavy showers today. Much debris in the roads locally with signs of temporary flooding there too. 
The Crassula was originally grown by my Father and this was a cutting very many years ago.It seems perfectly happy in the unheated conservatory.