Turns out I have all three species of False Widow Spider known to be in South Wales but there is a fourth found in southern Essex called 'steatoda paykulliana', which is a relatively new comer to the Uk, said to have transferred over seas in our grapes carts. One of the female spiders I blogged about yesterday was in-fact a Nobel False Widow - steatoda nobilis. This particularly species is the one that the media went crazy about, giving them a terribly name as a result. They aren't all that bad at all.
Here is a picture of all three Spiders as you can roughly see by the non cropped images, they do vary in size. Noble being the largest and bipunctata being the most commonly found. I suspect that nearly every home in the Uk will likely have one of these three species living there - un-noticed.