Could someone identify this spider please? This is the largest one we have found (west London) in the house. Most have been 5-8mm but this one is roughly the size of a 10 pence piece including legs.
This is a cupboard spider. Also known as Steatoda grossa. It is one of the false widow species but is generally a shy & docile spider, not aggressive. Spiderlings/wandering males are more likely to be seen. They are well established around the South of the UK. Pop any that you find outside if the thought of them troubles you.
I saw your various responses to queries associated with the False Widow spider, which prompted my interest. My wife and I moved into a house at Crawfordsburn, Northern Ireland in December 2013 and were startled to find that the basement was home to a collection of these spiders (see copy image). These creatures concern me as I have a severe allegy to spider bites and have suffered with various spider bites down the years. Indeed I was not aware that they had reached Northern Ireland at all.
Hi Michael, you are correct that the Noble False Widow, Steatoda nobilis, (the species if False Widow principally implicated in bites) is not yet recorded from Ireland.
Your image appears to be one of our Cave spiders, Meta sp. but would you be able to provide a couple more images (in a new thread if possible).