Under current guidance, companies are allowed to conduct new employees' right to work checks over video call, however those temporary measures are due to end on 16 May 2021. This temporary arrangement should become permanent to reflect COVID guidance and the widespread adoption of remote working.
You may be interested in these active petitions
Ending the temporary arrangement on 16 May 2021 would be a direct contravention of the government guidelines to "work from home if you can" until 21 June 2021.
Furthermore, since the start of the pandemic a number of companies have adopted remote working and therefore the previous right to work checks are no longer fit for purpose.