Free Traffic Legal Advice

Feel like this one might be a clear no chance case but thought I’d check anyway.

My wife was headed south on Tottenham Court Road and was caught in a bus/bike only stretch of the road just past the junction at Chenies Street (exact pin here: https://maps.app.goo.gl/4ASEMzDNrDABU4WU8?g_st=ic)

In her defence, she claims she saw no warning of the upcoming restriction until after passing through the lights. Hard to tell from GSV but the description of the signage seems fairly similar to this successful appeal on the Howland Street junction: https://www.ftla.uk/civil-penalty-charge-notices-(councils-tfl-and-so-on)/help-with-camden-pcns-two-received-one-minute-apart-on-tottenham-court-road/

PCN photos and evidence below:
https://imgur.com/a/AsQY2LX

Any opinions very welcome. Thanks in advance.