For the UK LoCo, that was a one-off stint. It wasn't anything large-scale, 15 guys total or thereabout. Generally, the P2F plague isn't exactly widespread in Europe. If and when there are cases of it, they are usually with some small and not exactly well-known operators from Eastern Europe. Most of the time, the "line training provider" would be located in other parts of the world where local labour regulations (or lack thereof) allow for all sorts of dodgy setups.