Woodies cont'd

Following on from the other day, and following another trip out for the 'choice chambers' experiment I thought I would hijack the woodlice and see what other varieties we had.
This beauty is a Common rough woodlouse Porcellio scaber, and it is by far the most numerous in our colony, which isn't surprising as it is probably the most common and widespread woodlouse in the UK.
It is 17mm long, usually grey and covered in tiny tubercles giving it a rough non- shiny appearance.
I wonder how many other types of woodlouse are living in our little colony.