As living wage campaigns are building in strength, we are increasingly seeing the use of immigration statuses to attack workers fighting against poverty wages and break trade union organising.
The message is that they are happy to employ migrant labour on poverty wages, but if you complain they will send you back home. It is absolutely shameful.
There is lots of information about the case here, with details about how to contact your MP and the UK Border Agency. The academic solidarity statement is kind of heartening.