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It looks like it could be Tachypodoilus niger - but not enough detail to be cetain.
BMIG website: www.bmig.org.uk (centipedes, millipedes & woodlice)
BMIG Newsletters ~ www.bmig.org.uk/view/resource/bmig-newsletter
BMIG Bulletins ~ www.bmig.org.uk/view/resource/bmig-bulletin
Hope the second photo helps?
It rules out other lookie-likies (such as Julus, Ophyiulus, etc), so leaves Tachypodiulus niger. Also, as Chris points out, black body with white legs is the most common colour form of this species (once known as T. albipes - the 'fast footed, white-footed, Julus').
Lat/Lng: 53.2723, -1.2367
OS grid ref: SK509753