This Practice Note provides employment lawyers with an introduction to the due diligence process in which they will be involved as advisers to the seller or the buyer prior to the acquisition of shares in a private limited company or the acquisition of a business and its assets (the target). It sets out the purpose of due diligence, how the due diligence process usually works, including auction sales and exceptions only or high level due diligence, the relationship with disclosure, auction sales, data rooms, timing, reporting, the employment adviser’s role in the process, information commonly sought and a summary of the issues arising that an employment lawyer for the buyer or seller should consider. For more detailed guidance on the particular issues to consider in employment due diligence on a share purchase, see Practice Notes: • Share purchases—employment issues acting for the buyer, and • Share purchases—employment issues acting for the seller For further information on complying with data protection obligations under Assimilated Regulation (EU) 2016/679, UK General Data Protection Regulation (UK GDPR)