Question to the Department for Business, Energy and Industrial Strategy:
To ask the Secretary of State for Business, Energy and Industrial Strategy, how many cases of migrants working undocumented were (a) found and closed and (b) passed from Acas to Immigration Enforcement in each of the last five years.
The Department for Business, Energy and Industrial Strategy does not collect data on how many migrants are working undocumented in the UK.
Acas does not make referrals from their individual conciliation service to Immigration Enforcement.