The anti-discrimination laws make it unlawful for you to discriminate against job seekers on the grounds of age, sex, pregnancy and maternity leave, gender reassignment, sexual orientation, married/civil partnership status, disability, race, religious or similar philosophical belief and political opinion.
The general rule is that it is unlawful for you to make recruitment decisions on any of these grounds, unless you can rely on a statutory exception as a defence, such as where the characteristic in question is a genuine occupational requirement, or, in cases of age discrimination, where the age criterion is justified, ie where it is shown to be a proportionate means of achieving a legitimate aim.
Outreach positive action
If your analysis of monitoring data reveals imbalances in applicant or staff numbers in terms of race, sex, etc you can use positive action to encourage members of the under-represented group to take up opportunities for work, eg by having job advertisements stating that applications from, for example, women, or minority ethnic groups will be particularly welcome. However, the advertisement must still state that the final recruitment decision will be based solely on merit.
You should keep in mind that if you make a recruitment decision based on an individual's religion, race, sex, age or sexual orientation, etc even if that particular group is under-represented in your workforce, this would be considered direct discrimination and is unlikely to be unlawful.
It is, however, permissible to treat disabled people more favourably than non-disabled people when making selection decisions.
Checking the right to work in the UK
You must be sure that your chosen candidate has the right to work in the UK - see ensuring your workers are eligible to work in the UK.
However, you must take care to avoid race discrimination while carrying out the necessary checks.