Purple flowering shrub

I think that this is Solanum rantonnei 'Royal Robe'. I have one in a pot because it isn't hardy, so I move it into the greenhouse for the winter. It may be OK in milder areas outside, but a hard frost would certainly kill it. I am in the mild-ish SW of England but London does seem to be several degrees warmer!

For interest, the SE is shown as slightly cooler than the SW (where Spritz and I hold residence) on my Hardiness Zones map. But anywhere near the middle of a city is almost always several degrees warmer than the surrounding area. Give it a try - beautiful colour!