Unless you have a really big problem with spiders It's just a matter of removal, or you can use a spider catching tool to capture the creature and then release it outside.
If you have a real fear of spiders and would rather just kill it, then spray it with a short burst of insecticidal spray or if you prefer the non insecticidal method you can use Organ X Freeze Spray. There is also a Spider Repellent spray that contains lavandin oil.
This is the only HSE approved spider repellent currently available.
Britain has more than 600 species of spiders, all of them harmless to man. Most arachnids (spiders) are predatory, feeding mainly on insects and they are extremely beneficial invertebrates, especially in the garden
Most spiders have just strayed into our homes and would rather be outside in the garden. The kindest thing to do it put them back into their natural environment.