Read the following case and answer the following question:

Sarah is a freelance photographer who began collaborating with Regent Lens Co$.$ on $17$ the October $2021.$ The subsequent details pertain to the period ending $14$th October $2022$:

$(1)$ Sarah operates on a project basis and invoices Regent Lens Co$.$ for the completed assignments rather than receiving an hourly wage. There is no provision for overtime payment.

$(2)$ Sarah retains the autonomy to accept or decline projects from Regent Lens Co$.,$ and she exercises creative control over her photography. she is not obligated to personally perform the work at Regent Lens Co$.\text{'}$s premises.

$(3)$ Sarah owns and maintains her photography equipment, including cameras, lenses, and lighting gear, and utilizes her tools for assignments with Regent Lens Co$.$

Despite observing her peers within the photography industry being treated as employees, Sarah believes her Collaboration with Regent Lens Co$.$ warrants classification as self$-$employed.

Required:

List those factors that indicate that Andrew should be treated as a Self$-$employed in relation to his work for Spark Ltd rather than as employed.

Note: You should limit your answer to the information given in the question.