Hi there, thank you for looking at this. Is it native to Ireland? Is it venominous?
This is one of the False Widow Spiders, one of the Steatoda species in the Cob Web Weaver family Theridiidae, likely Steatoda bipunctata, looking at the colour pattern. It is native and widespread in northwestern Europe, Britain and Ireland. Nearly all spiders are venomous, but Steatoda are not aggressive of dangerous.
Hi Calum, I agree with your id, I’ve checked it out on Wikipedia and it’s definitely the spider I saw, thank you for your rapid and informative reply! He/She’s happily wandering around my back garden so I’m glad to know it’s not a dangerous spider, it’s one I’ve never seen before.
Best regards, Phil