The High Court held that the employer owned a journalist's contact list, as it was created and kept on the employer's computer system, even though it included personal and business contacts which the employee had prior to joining the employer. The list could not be copied or removed in its entirety by an employee for use outside his employment or on termination of employment. (Pennwell Publishing (UK) Limited v Isles).
N.B. Company electronic communications policies should clarify that address lists created and contained on the employer's computer system will belong to the employer and may not be copied or removed in their entirety.