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This is very similar to Cylindroiulus londinensis; however the images are good enough to get a good look at the telson (tail) which is sharp and with a protruding point, making it I believe T. niger.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
I thought it might wear itself out running round in circles in my bug jar but was having none of it,so photo quality not as good as I would have liked.
Lat/Lng: 55.05876, -2.23433
OS grid ref: NY851738