Labour's approach to problems is to tax employers into oblivion and then say "the reason salaries are so low is because we didn't ban them from posting adverts without salary disclosure".
Unlike the other side (tm) ...
Mandatory Gender Pay Gap Reporting (Conservative Party 2017)
Pay Transparency Pilot (Conservative Party 2022) - (Participating employers only) list salary ranges on all job adverts and stop asking applicants for their salary history during recruitment
How is this taxing companies? They already have the data.