Once you have chosen who you want to employ, you can make a job offer. The job offer can be conditional, but once the conditions have been met and the employee accepts your job offer, you enter into a legal arrangement.
Some employment rights take effect as soon as the employee starts work with you. You will need to provide the new recruit with the terms and conditions of their employment - including job title, hours of work and pay and conditions. You must provide written terms and conditions of employment within two months of them starting work with you. And the sooner you do this the better.
This tool, from Acas, is aimed at small firms and organisations and explains what to do and how to do it. It includes sections on: