Buses, coaches and trams. Give priority to these vehicles when you can do so safely, especially when they signal to pull away from stops. Look out for people getting off a bus or tram and crossing the road.
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But there's no specific law mentioned and so (I believe) it has always just been a suggestion rather than a (legal) requirement.
https://www.gov.uk/road-users-requiring-extra-care-204-to-225/other-vehicles-219-to-225
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Buses, coaches and trams. Give priority to these vehicles when you can do so safely, especially when they signal to pull away from stops. Look out for people getting off a bus or tram and crossing the road.
"
But there's no specific law mentioned and so (I believe) it has always just been a suggestion rather than a (legal) requirement.