Just gone through the profiles on AW and Vivastreet for foreign prossies currently working in Lancs, and its the lowest I've seen.
If you take away the profiles for parlours, and massage-only girls, you are left with just 42 discrete phone numbers, several of which are duplicates. In addition there are around ten profiles with no phone number, probably troll accounts of some kind, and a similar number of abandoned accounts. That boils down to between 35-40 girls, excluding those in parlours.
Its very noticeable that the Romanians in Blackburn and the Poles in Preston have both dropped to single figures.
Not sure what the main cause it - Brexit blues, post-Christmas lethargy, or the success Lancs police had against Romanian gangs last year