The Immigration rules relating to a standard visitor visa are very strict and contain a restriction that the applicant or visa holder cannot work. Therefore, you cannot be employed or self employed or conduct any business. You can however look for a potential employer and even be interviewed by an employer with a view for you to re-enter the UK with as a Skilled Worker visa .
It is important to observe and not breach any of the conditions contained in your visitor visa UK. My Legal Services given they have vast experience and expertise in UK immigration and EU law matters. We are based in the heart of Central London, Oxford Street.