Legislation is pointless unless it is rigidly and robustly enforced, and sufficient enforcement officers are employed to make this happen on every street 24 hours/day. The only way that would happen would be for the Home Secretary/Treasury to at least double the staffing budget for every police force - which would in reality have to increase taxes, cut services, or but the burden on local authorities/metropolitan mayors. I wouldn't put it past the government, however to churn out anti-cyclist hate propaganda blaming cyclists for the lac of effective policing, or even direct blame to people coming to this country some way or other.