From Rory Sutherland's Alchemy:
...there is no reason for Brits to be afraid of spiders, since there are no poisonous spiders in the UK – but it’s still there, just in case.
Google has many results, e.g., which say that in fact, the UK has multiple poisonous spiders. However it would be correct to say that there're no deadly poisonous spiders; perhaps what Sutherland meant.
OpenAI gets this one right: