Rail staff on part of the Greater Anglia network are being balloted on strike action after the RMT union accused the operator of "ripping up" procedures.
Members of the Rail Maritime and Transport union on Greater Anglia's West Anglia route will vote in the next few weeks on whether to launch a campaign of industrial action.
The union claims that changes being planned by the company will lead to the axing of station cleaners' jobs.
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The family of Oliver Dearlove urged people to "think again" before using their fists, as the man who killed him began a six-year jail term.
London Fire Brigade took Southwark Council to court on four charges in relation to safety breaches at Lakanal House in Camberwell.
Oliver Dearlove died 24 hours after receiving the fatal blow outside Morden's wine bar in Blackheath last summer.