They also sent a useful booklet that explains the checks that an employer must make on new employees to ensure that they are legally entitled to work in the UK before giving them a job. 

Employers will be committing a criminal offence if they fail to carry out the required checks.

Detailed guidance is available at www.ind.homeoffice.gov.uk click on the Employers Information tab.

There is also an Employers' Helpline on 0845 010 6677