An individual might be able to apply for switching or converting to a Skilled Worker visa if they are already in the UK on a different UK visa. In order to switch, their job must meet the eligibility requirements for the Skilled Worker visa and they must also be able to speak, read, write and understand the English language.
Certain categories of individuals – such as those in UK on a visit visa, short-term student visa etc. – cannot apply for a switch to the Skilled Worker visa.