We have been watching this one for weeks and today have found 4 more all big living close together in small holes in the brick work-(far to close to the back door Yuk- any that make it into the house are not going to live much longer!
It is indeed and is Steatoda nobilis, the most notorious of our six UK species of this group. They are not deadly as has been reported but can and do bite, though very occasionally and under somewhat exceptional circumstances. I have this species all over my the outside of my home, the garden and in the greenhouse - my rule if thumb is to give the toe of my boot to any I find setting up home inside the house, but otherwise I am not concerned. The truth is that you are far more likely to be stung by a bee or wasp than go be bitten by this spider - and on average people are stung 2-3 times in their lives.
These are two of the biggest we have found so far. Very similar to yours although the markings are always bright yellow on the falsie's big shiny black abdomen, around our home.
How can I tell wether it's male or female?