Hypothetical law change? Lorry on bike: lorry's fault. Bike on ped: bike's fault

Always? Even if there's a green/marked cycle lane? Serious question - I don't know. Everyone passes moving vehicles on the left. And I don't mean "everyone" like "everyone runs red lights" I mean every single other cyclist I see on my daily commute.

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The new Highway Code has cleared up the uncertainty. Old rule 129 has been replaced by new rule 151, which has a new bullet-point on the end:
151 In slow-moving traffic. You should
• […] • be aware of cyclists and motorcyclists who may be passing on either side
So cyclists and motorcyclists overtaking slow-moving traffic on either the left or the right can now say that this is sanctioned by the Highway Code, as it alerts drivers to both possibilities. "