Unidentified

Hi. Sad to say, squish first, identify later just doesn’t work too well.
Here are 65 of the most common UK spiders, perhaps you can recognize it from the lot.
http://www.uksafari.com/spiders.htm
A bit surprised arachnophobia is alive and well in the UK, there is not one spider anywhere, any color, shape, or form, that will cause any harm to you at all. I would freely handle any spider there, many,I already have.