Posted: 10/07/2013 at 16:23
Sorry, but it does not look like deadly nightshade.
'A tall, stout, often downy bushy perennial 2 - 6ft high, with broad, pointed oval stalked leaves, and at their base solitary large drooping bell-shaped, dull purple flowers. Fruit a glossy black berry, the size of a small cherry, surrounded by the broad calyx-lobes. Often confounded with the smaller Woody Nightshade.'
'Woody Nightshade, clambering or prostrate, weakly twining. Flowers with conspicuous central column of yellow anthers. Fruit an egg-shaped berry, green then yellow and finally red.' I have paraphrased, it is easy to look up.
It is poisonous, but not nearly as much so as deadly nightshade which is typically found on chalk.