The mutual currently employs 512 mortgage advisers.
To adapt to remote working during the pandemic, Nationwide ramped up its online capabilities and now reports half of its consultations are carried out digitally.
It has also extended the hours it holds online appointments from 9am to 5pm, to 8am to 7pm.
A spokesperson for Nationwide told This is Money: “We fully recognise that some people will still want to talk to someone on the phone or face-to-face in person, which is why we will continue to offer these services where it’s appropriate in order to meet the needs of members.
“The move to processing mortgage sales via the video-to-member service allows us to be more efficient, so we do need to reduce our mortgage sales team.”