Confidence: I'm as sure as I can be.
Notes: First pic shows an adult and some empty egg cases of the species. Pics 2 and 3 contain what is likely to be the juvenile of the species. These have decimated native earthworm populations in vast areas by predating on them. This webpage states that it was actually recorded in Ireland (Belfast 1963) prior to being found in Edinburgh in 1965: http://flatworm.csl.gov.uk/